Simplify FastAPI fullstack template by include frontend code and a build script #423
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WalkthroughThe pull request introduces significant changes to the application setup process, particularly in how ports are referenced and the installation logic is executed. The Changes
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🦋 Changeset detectedLatest commit: 8079ba4 The changes in this PR will be included in the next version bump. This PR includes changesets to release 1 package
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Actionable comments posted: 7
🧹 Outside diff range and nitpick comments (16)
helpers/run-app.ts (1)
81-83: Consider refactoring template checks to improve maintainabilityThe condition
template === "streaming" || template === "multiagent"appears multiple times. Refactoring this into a helper function or using an array of templates can enhance readability and make future updates easier.Example refactor:
const templatesNeedingFrontend = ["streaming", "multiagent"]; if (frontend && templatesNeedingFrontend.includes(template)) { await buildFrontend(appPath, framework); }templates/types/streaming/fastapi/run.py (1)
1-5: Enhance code documentation and type safetyConsider adding:
- Type hints for function parameters and return values
- More detailed docstrings with parameters, returns, and raises sections
- Module-level docstring explaining the file's purpose
Add a module docstring and improve imports:
+""" +Frontend build and development utilities for the FastAPI application. + +This module provides utilities for managing frontend dependencies, +building the frontend application, and running the development server. +""" + +from pathlib import Path import os - +from typing import Literal import rich -templates/types/streaming/fastapi/main.py (1)
47-48: Good API router setup with proper prefix.The API router is correctly mounted with the "/api" prefix, following REST API best practices. This separation of API routes from static file routes is crucial for the frontend integration.
The placement of this line before the static file mounts is important. In FastAPI, route matching follows a first-come-first-served basis, so having the API routes registered first ensures they take precedence over any potential conflicts with static file paths.
helpers/types.ts (1)
99-99: Consider adding JSDoc documentation for the port parameter.Adding documentation would help clarify the purpose and expected values of the port parameter.
Add JSDoc comments like this:
+ /** Port number for the application server. If not specified, a default port will be used. */ port?: number;e2e/shared/multiagent_template.spec.ts (2)
64-67: Add skip message for better test maintainabilityThe skip conditions are logically correct, but adding a descriptive skip message would improve test maintainability and debugging.
test.skip( templatePostInstallAction !== "runApp" || templateFramework === "express", + "Frontend title test is only applicable for non-Express frameworks with runApp action" );
76-79: Update skip message to include Express framework conditionThe skip message should be updated to include all skip conditions for better clarity.
test.skip( templatePostInstallAction !== "runApp" || agents === "financial_report" || agents === "form_filling" || templateFramework === "express", - "Skip chat tests for financial report and form filling.", + "Skip chat tests for financial report, form filling, and Express framework.",templates/types/streaming/fastapi/README-template.md (2)
24-28: Add language specification to code blockThe code block should specify the shell language for proper syntax highlighting.
-``` +```shell poetry run build<details> <summary>🧰 Tools</summary> <details> <summary>🪛 Markdownlint</summary> 26-26: null Fenced code blocks should have a language specified (MD040, fenced-code-language) </details> </details> --- `30-33`: **Add language specification to code block** The code block should specify the shell language for proper syntax highlighting. ```diff -``` +```shell poetry run dev<details> <summary>🧰 Tools</summary> <details> <summary>🪛 Markdownlint</summary> 32-32: null Fenced code blocks should have a language specified (MD040, fenced-code-language) </details> </details> </blockquote></details> <details> <summary>e2e/shared/streaming_template.spec.ts (2)</summary><blockquote> `70-72`: **Add a descriptive skip message** The skip condition logic is correct, but it would be helpful to add a message explaining why the test is skipped for express framework. ```diff test.skip( templatePostInstallAction !== "runApp" || templateFramework === "express", + "Frontend tests are skipped for express framework or when app is not running" );
80-82: Add a descriptive skip messageFor consistency with the previous test, add a descriptive message explaining the skip condition.
test.skip( templatePostInstallAction !== "runApp" || templateFramework === "express", + "Frontend message submission tests are skipped for express framework or when app is not running" );create-app.ts (1)
95-104: Consider architectural improvements for frontend installationSeveral suggestions for improvement:
- The
.frontenddirectory being hidden might cause confusion. Consider making this configurable or using a visible directory.- The tight coupling to "fastapi" framework limits extensibility. Consider making the frontend framework compatibility configurable.
- The hardcoded fallback port
8000should be extracted to a constant or configuration.Consider this refactor:
+ const DEFAULT_API_PORT = 8000; + const SUPPORTED_FRONTEND_FRAMEWORKS = ['fastapi']; // Make extensible - if (frontend && framework === "fastapi") { + if (frontend && SUPPORTED_FRONTEND_FRAMEWORKS.includes(framework)) { // install frontend - const frontendRoot = path.join(root, ".frontend"); + const frontendRoot = path.join(root, "frontend"); await makeDir(frontendRoot); await installTemplate({ ...args, root: frontendRoot, framework: "nextjs", - customApiPath: `http://localhost:${port ?? 8000}/api/chat`, + customApiPath: `http://localhost:${port ?? DEFAULT_API_PORT}/api/chat`, backend: false, }); }e2e/utils.ts (1)
147-149: Consider validating for duplicate portsWhile the implementation is clean, consider adding validation to prevent potential issues with duplicate port numbers. If
portandexternalPortare the same, it could lead to redundant waiting or misleading error messages.Consider this improvement:
- const portsToWait = externalPort ? [port, externalPort] : [port]; + const portsToWait = externalPort && externalPort !== port ? [port, externalPort] : [port];index.ts (1)
336-336: Add port number validation.The port values are used without validation, which could lead to runtime errors if invalid values are provided.
Consider adding validation:
+ function validatePort(port: string | undefined): number { + if (!port) return 3000; // default port + const portNum = parseInt(port, 10); + if (isNaN(portNum) || portNum < 0 || portNum > 65535) { + throw new Error(`Invalid port number: ${port}`); + } + return portNum; + } await createApp({ ...answers, appPath: resolvedProjectPath, packageManager, - port: options.port, + port: validatePort(options.port), });helpers/typescript.ts (2)
Line range hint
351-386: Consider refactoring vector database dependencies logic.The vector database specific sections in
updatePackageJsonfollow a repetitive pattern. Consider extracting this into a separate configuration object or function for better maintainability.+ const VECTOR_DB_DEPENDENCIES = { + pg: { + pg: "^8.12.0", + pgvector: "^0.2.0", + }, + qdrant: { + "@qdrant/js-client-rest": "^1.11.0", + }, + mongo: { + mongodb: "^6.7.0", + }, + milvus: { + "@zilliz/milvus2-sdk-node": "^2.4.6", + }, + }; + if (vectorDb) { - if (vectorDb === "pg") { - packageJson.dependencies = { - ...packageJson.dependencies, - pg: "^8.12.0", - pgvector: "^0.2.0", - }; - } - if (vectorDb === "qdrant") { - packageJson.dependencies = { - ...packageJson.dependencies, - "@qdrant/js-client-rest": "^1.11.0", - }; - } - if (vectorDb === "mongo") { - packageJson.dependencies = { - ...packageJson.dependencies, - mongodb: "^6.7.0", - }; - } - if (vectorDb === "milvus") { - packageJson.dependencies = { - ...packageJson.dependencies, - "@zilliz/milvus2-sdk-node": "^2.4.6", - }; - } + packageJson.dependencies = { + ...packageJson.dependencies, + ...VECTOR_DB_DEPENDENCIES[vectorDb], + }; }
Line range hint
441-444: Enhance error handling in installTSDependencies.The current error handling only logs and exits. Consider:
- Including the actual error message in the log
- Providing more context about what failed
- await callPackageManager(packageManager, isOnline).catch((error) => { - console.error("Failed to install TS dependencies. Exiting..."); - process.exit(1); - }); + await callPackageManager(packageManager, isOnline).catch((error) => { + console.error(`Failed to install TS dependencies using ${packageManager}:`, error); + console.error("Please ensure you have the necessary permissions and network connectivity."); + process.exit(1); + });questions/questions.ts (1)
136-136: Improve message clarity for frontend generationThe message could be more informative about the integration process. Consider adding details about what the frontend generation entails.
- message: `Would you like to generate a ${styledNextJS} frontend for your FastAPI backend?`, + message: `Would you like to generate a ${styledNextJS} frontend that integrates with your FastAPI backend? This will create a separate frontend application.`,
📜 Review details
Configuration used: .coderabbit.yaml
Review profile: CHILL
📒 Files selected for processing (17)
create-app.ts(3 hunks)e2e/shared/multiagent_template.spec.ts(3 hunks)e2e/shared/streaming_template.spec.ts(3 hunks)e2e/utils.ts(3 hunks)helpers/devcontainer.ts(1 hunks)helpers/env-variables.ts(2 hunks)helpers/run-app.ts(3 hunks)helpers/types.ts(1 hunks)helpers/typescript.ts(1 hunks)index.ts(1 hunks)questions/questions.ts(2 hunks)templates/.gitignore(1 hunks)templates/types/streaming/fastapi/README-template.md(2 hunks)templates/types/streaming/fastapi/gitignore(1 hunks)templates/types/streaming/fastapi/main.py(1 hunks)templates/types/streaming/fastapi/pyproject.toml(2 hunks)templates/types/streaming/fastapi/run.py(1 hunks)
✅ Files skipped from review due to trivial changes (2)
- templates/.gitignore
- templates/types/streaming/fastapi/gitignore
🧰 Additional context used
📓 Path-based instructions (4)
templates/types/streaming/fastapi/README-template.md (1)
Pattern templates/**: For files under the templates folder, do not report 'Missing Dependencies Detected' errors.
templates/types/streaming/fastapi/main.py (1)
Pattern templates/**: For files under the templates folder, do not report 'Missing Dependencies Detected' errors.
templates/types/streaming/fastapi/pyproject.toml (1)
Pattern templates/**: For files under the templates folder, do not report 'Missing Dependencies Detected' errors.
templates/types/streaming/fastapi/run.py (1)
Pattern templates/**: For files under the templates folder, do not report 'Missing Dependencies Detected' errors.
🪛 Markdownlint
templates/types/streaming/fastapi/README-template.md
26-26: null
Fenced code blocks should have a language specified
(MD040, fenced-code-language)
32-32: null
Fenced code blocks should have a language specified
(MD040, fenced-code-language)
🔇 Additional comments (21)
helpers/run-app.ts (2)
46-52: LGTM!
The buildFrontend function is implemented correctly and appropriately selects the package manager based on the framework.
78-95: LGTM!
The runApp function has been refactored correctly to handle asynchronous operations with proper error handling.
templates/types/streaming/fastapi/pyproject.toml (2)
21-21: LGTM: Rich library addition aligns with build script requirements
The addition of the rich library (^13.9.4) is appropriate for enhancing terminal output during frontend build and development processes. The version constraint allows for compatible updates while preventing breaking changes.
10-11: Verify the existence of referenced functions in run.py
The new script entries point to run:build and run:dev, which should be defined in a new run.py file.
✅ Verification successful
Functions referenced in pyproject.toml scripts are properly implemented
The verification confirms that both build() and dev() functions are correctly implemented in templates/types/streaming/fastapi/run.py:
build(): Handles frontend dependency installation, build process, and static file copyingdev(): Manages FastAPI app startup
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify that the referenced functions exist in run.py
# Expected: Find definitions of build and dev functions
# Search for run.py file
fd -t f "run.py$"
# Search for function definitions
ast-grep --pattern 'def build():
$$$'
ast-grep --pattern 'def dev():
$$$'
Length of output: 2112
helpers/devcontainer.ts (1)
18-19: 🛠️ Refactor suggestion
Verify the build command execution timing and dependencies
The addition of poetry run build during container creation raises some concerns:
- Running the build during container creation might be premature as it requires all dependencies to be properly installed first.
- There's no error handling if the build fails, which could leave the container in an inconsistent state.
Let's verify the build command implementation and dependencies:
Consider these improvements:
- ? "poetry install && poetry run build"
+ ? "poetry install && poetry run build || { echo 'Frontend build failed'; exit 1; }"Consider moving the build step to a separate script that:
- Verifies all required dependencies are installed
- Sets up necessary environment variables
- Includes proper error handling and logging
- Can be executed independently of container creation
Would you like me to help create this build script?
templates/types/streaming/fastapi/main.py (2)
37-43: LGTM! The mount_static_files function enhancement looks good.
The addition of the html parameter with a default value of False maintains backward compatibility while enabling HTML file serving when needed. The implementation follows FastAPI best practices.
Let's verify the HTML file serving capability:
✅ Verification successful
The mount_static_files function enhancement is correctly implemented
The code analysis reveals that the function is properly used in three different scenarios:
- Data files mounting at
/api/files/data - Output files mounting at
/api/files/output - Static files mounting at root
/withhtml=True
The implementation is correct because:
- The
htmlparameter is only enabled for the frontend static files at root - The function maintains backward compatibility for data and output mounts
- The StaticFiles configuration follows FastAPI's recommended patterns
The absence of static/data directories in the verification is expected as this is a template file that will be populated during project instantiation.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check for HTML files in the static directory that will be served
# Expected: Find HTML files that would be served by the static file handler
# Search for HTML files in the static directory
fd -e html . static/
# Check if the static directory exists and is properly structured
if [ -d "static" ]; then
echo "Static directory exists"
ls -la static/
else
echo "Warning: static directory not found"
fi
Length of output: 437
Script:
#!/bin/bash
# Let's check the codebase for static file mounting usage patterns
# and HTML file references to understand the implementation better
# Find all static file mounting calls
echo "Searching for static file mounting patterns..."
rg "mount_static_files|StaticFiles" -A 2 -B 2
# Look for HTML file references in the codebase
echo -e "\nSearching for HTML file references..."
rg -l "\.html"
# Check template structure
echo -e "\nChecking template structure..."
fd -t f . templates/types/streaming/fastapi/
Length of output: 3417
53-54: Verify directory structure for frontend static files.
The static file mounting structure looks good, with frontend files appropriately mounted at the root path with HTML support enabled.
Let's verify the directory structure and suggest potential improvements:
Consider adding error handling for cases where directories don't exist at runtime:
def mount_static_files(directory, path, html=False):
if os.path.exists(directory):
logger.info(f"Mounting static files '{directory}' at '{path}'")
app.mount(
path,
StaticFiles(directory=directory, check_dir=False, html=html),
name=f"{directory}-static",
)
+ else:
+ logger.warning(f"Directory '{directory}' does not exist, skipping mount at '{path}'")✅ Verification successful
Let me verify if these directories are expected to be created at runtime or if they should exist in the repository by checking the codebase.
Based on the findings, I can now provide a final response. The missing directories are expected as they are created during the build/runtime process:
- The
staticdirectory is created when runningpoetry run buildfor the frontend UI - The
outputdirectory is created at runtime for file outputs - The
DATA_DIRis configured through environment variables
The current implementation already has proper error handling by checking directory existence before mounting, so no changes are needed.
Static file mounting is correctly implemented with proper error handling
The current implementation in mount_static_files() already checks for directory existence before mounting, making it safe for cases where directories don't exist:
if os.path.exists(directory):
logger.info(f"Mounting static files '{directory}' at '{path}'")
app.mount(...)🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify directory structure and content for static file mounting
# Expected: All directories should exist and contain appropriate files
# Check all mounted directories
echo "Checking data directory..."
if [ -d "$DATA_DIR" ]; then
echo "✓ Data directory exists"
ls -la "$DATA_DIR"
else
echo "✗ Data directory missing"
fi
echo "Checking output directory..."
if [ -d "output" ]; then
echo "✓ Output directory exists"
ls -la output/
else
echo "✗ Output directory missing"
fi
echo "Checking static directory..."
if [ -d "static" ]; then
echo "✓ Static directory exists"
echo "Frontend files:"
fd . static/ -t f
else
echo "✗ Static directory missing"
fi
Length of output: 437
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#!/bin/bash
# Search for directory creation or initialization logic
echo "Searching for directory creation or initialization..."
rg -l "mkdir|makedirs|os\.path\.exists.*static|os\.path\.exists.*output" --type py
echo -e "\nChecking mount_static_files implementation..."
rg "def mount_static_files" -A 10
echo -e "\nChecking if static/output are gitignored..."
cat .gitignore || echo "No .gitignore found"
echo -e "\nChecking for build/setup instructions..."
fd "README|CONTRIBUTING" -e md -X cat {}
Length of output: 33218
e2e/shared/multiagent_template.spec.ts (1)
19-19: Verify architectural change in frontend handling
The change in appType assignment suggests a significant architectural shift where frontend is now associated with FastAPI instead of NextJS. This could have broader implications across the codebase.
✅ Verification successful
Let me gather more information about the frontend configuration by checking the test configuration and template setup.
Based on the comprehensive search results, I can now provide the final response:
Frontend configuration change is correct and intentional
The change in appType assignment is consistent with the codebase's architecture:
- FastAPI templates now include frontend by default (
--frontend), while NextJS has no explicit frontend flag (empty string) - This aligns with the application's structure where NextJS itself is a full-stack framework, while FastAPI requires an explicit frontend setup
- The change is consistently implemented across multiple test files (
streaming_template.spec.ts,multiagent_template.spec.ts) - The main application code in
create-app.tsconfirms this design where frontend installation is specifically handled for FastAPI:if (frontend && framework === "fastapi")
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify consistency of frontend handling across the codebase
# Check for other instances of frontend type determination
rg -A 3 "appType.*=.*frontend" --type ts
# Look for related configuration in create-app
rg -A 5 "fastapi.*frontend" --type ts
Length of output: 2403
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#!/bin/bash
# Check test configuration and template setup
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rg -B 2 -A 2 "templateFramework.*=.*" --type ts
# Check for any frontend-related configuration or setup
rg -B 2 -A 2 "frontend.*=.*" --type ts
# Look for NextJS related configurations
rg -B 2 -A 2 "nextjs" --type ts
Length of output: 18516
templates/types/streaming/fastapi/README-template.md (1)
59-59: LGTM!
Clear instructions for accessing either the chat UI or Swagger documentation based on frontend build status.
e2e/shared/streaming_template.spec.ts (2)
107-107: LGTM!
The port usage in the API endpoint is correctly updated, maintaining consistency with the port management changes.
25-25:
Verify the logic for frontend flag assignment
The assignment of --frontend flag when templateFramework is "fastapi" seems counterintuitive, as FastAPI is a backend framework while Next.js is typically used for frontend. This could lead to incorrect test behavior.
Let's verify the intended behavior:
create-app.ts (2)
92-93: LGTM! Simplified backend installation logic
The unconditional backend installation simplifies the code flow and makes the behavior more predictable.
37-37: Verify documentation for breaking change
The parameter renaming from externalPort to port is a breaking change that could affect existing applications.
Let's verify the documentation and migration guide:
Also applies to: 83-83
✅ Verification successful
Based on the extensive git history and codebase analysis, I can now provide a definitive response about the parameter rename from externalPort to port:
Breaking change is properly handled and documented
The parameter rename from externalPort to port is actually part of a larger refactoring effort to simplify port handling across the codebase. The changes show:
- The parameter is still supported through backwards compatibility:
- The CLI still accepts
--external-portflag - The type definitions maintain support via optional
externalPortparameter - The parameter is properly mapped in index.ts:
port: options.externalPort
- The change is properly encapsulated:
- Frontend installation uses the port parameter consistently
- Backend services handle both port configurations
- Test files have been updated to support both parameters
- No breaking changes introduced:
- Existing code paths maintain compatibility
- Default port values (3000/8000) are preserved
- Port handling logic remains consistent
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check if breaking change is documented
# Check for migration guide or changelog
fd -e md -e mdx . | xargs rg -i "externalPort.*port"
# Check for any remaining usages of externalPort
rg "externalPort"
Length of output: 1178
Script:
#!/bin/bash
# Let's check for recent changes related to this parameter rename
git log -p | rg -A 5 -B 5 "externalPort"
# Check the current state of create-app.ts
cat create-app.ts
# Look for any documentation or changelog files
fd "CHANGELOG|BREAKING|MIGRATION" -i
Length of output: 70785
e2e/utils.ts (2)
104-106: LGTM! Clean implementation of optional parameter handling
The conditional addition of externalPort to command arguments is well-implemented and handles the optional nature of the parameter correctly.
28-28: Verify the impact of optional externalPort on existing tests
Making externalPort optional is a breaking change that could affect existing tests.
Let's verify the usage in test files:
✅ Verification successful
The search results show that externalPort is actively used in multiple test files, particularly in:
e2e/shared/multiagent_template.spec.tse2e/shared/extractor_template.spec.tse2e/python/resolve_dependencies.spec.tse2e/typescript/resolve_dependencies.spec.ts
Let's verify how the externalPort is handled in the implementation to ensure the optional change doesn't break existing functionality:
Making externalPort optional is safe and properly handled
The implementation shows that externalPort is already properly guarded:
- Command arguments only include
--external-portwhenexternalPortis provided - Port waiting logic correctly handles both cases with
externalPort ? [port, externalPort] : [port]
Therefore, making it optional in the type definition aligns with the existing implementation and won't break existing tests since they all explicitly provide the port number.
🏁 Scripts executed
The following scripts were executed for the analysis:
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#!/bin/bash
# Description: Find all test files that use RunCreateLlamaOptions and check for externalPort usage
# Search for test files using RunCreateLlamaOptions
rg -l "RunCreateLlamaOptions" --glob "**/*.{test,spec}.{ts,tsx,js,jsx}"
# Search for direct usage of externalPort in test files
rg "externalPort" --glob "**/*.{test,spec}.{ts,tsx,js,jsx}" -A 2
Length of output: 2150
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#!/bin/bash
# Check how externalPort is handled in the implementation
rg "externalPort" e2e/utils.ts -B 2 -A 2
Length of output: 526
index.ts (2)
Line range hint 89-103: Clarify the purpose of port-related CLI options.
The code defines two port-related options (--port and --external-port) but their purposes and differences are not clearly documented. This becomes especially important given the ongoing parameter renaming from externalPort to port.
Let's check the documentation and usage examples:
#!/bin/bash
# Search for documentation about ports
echo "Searching for port-related documentation..."
fd -e md -e txt . -x rg -l "port"
# Search for usage examples
echo "Searching for usage examples..."
fd README.md -x rg -A 5 -B 5 "\-\-port|\-\-external\-port"Consider improving the CLI option descriptions:
.option(
"--port <port>",
- `\n\n Select UI port.`,
+ `\n\n Specify the port number for the UI server (default: 3000).`,
)
.option(
"--external-port <external>",
- `\n\n Select external port.`,
+ `\n\n Specify the port number for external access, useful when running behind a proxy or in a container (default: same as --port).`,
)336-336:
Inconsistent port parameter usage detected.
The code uses port in createApp but still maintains both port and externalPort in the runApp call. This inconsistency could lead to confusion.
Let's verify the usage of these parameters across the codebase:
helpers/typescript.ts (1)
244-247: Verify impact on frontend-only installations.
The addition of the backend condition aligns with the PR objective of integrating frontend with backend. However, let's verify that this change doesn't break frontend-only installations.
✅ Verification successful
The backend condition is safe and correctly implemented
The verification shows that the change is safe for frontend-only installations because:
- The condition only affects TypeScript dependency installation for backend components
- Frontend configurations in
questions/simple.tsare handled separately and remain unaffected - The
postInstallActionlogic is consistently applied across the codebase, with similar patterns inhelpers/python.tsandhelpers/llama-pack.ts - Test files show that frontend and backend installations are properly segregated with the
--no-frontendflag
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check for any frontend-only installation flows that might be affected
# Search for frontend-only installation patterns
rg -A 5 "installTSTemplate.*backend:\s*false"
# Search for test cases involving frontend-only installations
rg -A 10 "describe.*frontend.*installation|test.*frontend.*installation"
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#!/bin/bash
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rg -A 3 'installTSTemplate\('
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rg -A 5 'frontend.*=.*true|frontend.*:.*true'
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#!/bin/bash
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# Look at the full implementation of installTSTemplate
rg -B 10 -A 20 'export async function installTSTemplate'
# Check if there are any other conditions or handlers for frontend installations
rg -B 3 -A 3 'postInstallAction.*=|postInstallAction.*:'
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questions/questions.ts (1)
126-129: Verify: Express frontend support removal
The condition for frontend generation has been changed to only support FastAPI. Previously, it supported both Express and FastAPI. Please confirm if removing Express frontend support is intentional, as this could be a breaking change for existing users.
helpers/env-variables.ts (2)
556-556: LGTM: Parameter renaming is consistent
The renaming from externalPort to port aligns with the broader changes across the codebase and improves naming clarity.
573-573: Consider improving port handling logic
While the parameter renaming is correct, there's a FIXME comment indicating that NextJS port should be 3000. Consider:
- Making the port handling more explicit
- Adding validation to prevent port conflicts between frontend and backend
Let's verify the port usage across the codebase:
Consider implementing a port availability check and adding a warning if the specified port conflicts with the default NextJS port (3000).
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🧹 Outside diff range and nitpick comments (3)
helpers/run-app.ts (3)
46-52: Enhance build feedback and error handlingWhile the implementation is correct, consider adding more descriptive logging to help users track the build progress and diagnose failures more easily.
export function buildFrontend(appPath: string, framework: TemplateFramework) { + console.log(`Building frontend using ${framework === "fastapi" ? "poetry" : "npm"}...`); const packageManager = framework === "fastapi" ? "poetry" : "npm"; return createProcess(packageManager, ["run", "build"], { stdio: "inherit", cwd: appPath, }); }
92-94: Enhance error reportingThe current error message doesn't provide enough context about what specifically failed (build or run phase).
} catch (error) { - console.error("Failed to run app:", error); + const phase = error.message?.includes('build') ? 'build' : 'run'; + console.error(`Failed to ${phase} app:`, error); + console.error('Please check the logs above for more details.'); throw error; }
89-90: Centralize default port configurationConsider extracting the default port values to a configuration constant to improve maintainability.
+const DEFAULT_PORTS = { + nextjs: 3000, + fastapi: 8000, +} as const; + export async function runApp(/*...*/) { // ... - const defaultPort = framework === "nextjs" ? 3000 : 8000; + const defaultPort = DEFAULT_PORTS[framework]; await appRunner(appPath, port || defaultPort); // ... }
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helpers/run-app.ts (1)
15-19: Fix Promise resolution logic to prevent multiple settlements
The Promise can still be settled multiple times if the process exits with a non-zero code.
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🧹 Outside diff range and nitpick comments (3)
helpers/run-app.ts (2)
28-34: Enhance error messaging for build failuresThe build errors could be more descriptive to help diagnose frontend build issues.
Consider this enhancement:
export function buildFrontend(appPath: string, framework: TemplateFramework) { const packageManager = framework === "fastapi" ? "poetry" : "npm"; + console.log(`Building frontend using ${packageManager}...`); return createProcess(packageManager, ["run", "build"], { stdio: "inherit", cwd: appPath, }); }
74-94: Improve error handling and type safetyConsider these enhancements:
- Use custom error types for different failure scenarios
- Make template parameter type-safe using an enum
Example implementation:
enum Template { EXTRACTOR = "extractor", STREAMING = "streaming", MULTIAGENT = "multiagent" } class AppRunnerError extends Error { constructor(message: string, public readonly cause?: unknown) { super(message); this.name = 'AppRunnerError'; } } export async function runApp( appPath: string, template: Template, // Use enum instead of string frontend: boolean, framework: TemplateFramework, port?: number, ): Promise<void> { try { // ... existing code ... } catch (error) { throw new AppRunnerError( `Failed to run app with template ${template}`, error ); } }e2e/utils.ts (1)
Line range hint
19-141: Consider updating documentation to reflect port handling changesThe simplification of port handling from dual (
port/externalPort) to single (port) configuration is a good architectural improvement. Consider:
- Updating any API documentation to reflect these changes
- Adding migration notes for users updating from previous versions
- Documenting the new port configuration approach in the testing guide
This will help users understand and adapt to the new simplified approach.
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e2e/python/resolve_dependencies.spec.ts(0 hunks)e2e/shared/extractor_template.spec.ts(0 hunks)e2e/shared/multiagent_template.spec.ts(3 hunks)e2e/typescript/resolve_dependencies.spec.ts(0 hunks)e2e/utils.ts(1 hunks)helpers/run-app.ts(2 hunks)index.ts(1 hunks)questions/types.ts(1 hunks)
💤 Files with no reviewable changes (3)
- e2e/python/resolve_dependencies.spec.ts
- e2e/shared/extractor_template.spec.ts
- e2e/typescript/resolve_dependencies.spec.ts
🔇 Additional comments (8)
questions/types.ts (1)
5-5: Verify property naming consistency across codebase
The change includes the port-related property in QuestionResults, but there might be an inconsistency. The AI summary indicates that externalPort is being renamed to port across the codebase, but this change simply includes the property without renaming it.
Let's verify the property naming in related files:
✅ Verification successful
Based on the search results, I can now generate the final response:
Property naming is consistent with port across the codebase
The verification shows that:
- No occurrences of
externalPortproperty were found in interfaces or usage - All port-related properties consistently use
portnaming across the codebase - The property is correctly typed as
number | nullin various interfaces
Therefore, removing "externalPort" from the Omit type is the correct approach as it aligns with the consistent use of port throughout the codebase.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check the usage of 'externalPort' and 'port' properties in type definitions
# and their usage across the codebase to ensure consistency
# Check type definitions and interfaces
echo "Checking type definitions for port properties..."
ast-grep --pattern 'interface $_ {
$$$
port: $_
$$$
}'
ast-grep --pattern 'interface $_ {
$$$
externalPort: $_
$$$
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# Check property usage in code
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rg -A 2 'externalPort:'
rg -A 2 'port:'
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helpers/run-app.ts (1)
15-19:
Fix Promise resolution logic to prevent multiple settlements
The Promise can be settled twice if the process exits with a non-zero code. Currently, resolve() is called unconditionally after the if block.
Apply this fix:
if (code !== 0) {
console.log(`Child process exited with code=${code}`);
reject(code);
+ } else {
resolve();
+ }Likely invalid or redundant comment.
e2e/shared/multiagent_template.spec.ts (3)
73-76: LGTM! Clear and well-documented test skip conditions
The skip conditions are well-defined and properly documented with a clear comment explaining why specific agents are excluded.
61-64: Verify Express framework exclusion rationale
The skip condition for Express framework has been added, but the rationale for excluding Express isn't immediately clear.
#!/bin/bash
# Description: Verify Express framework frontend integration support
# Check for Express frontend integration patterns
echo "Checking Express frontend integration patterns:"
rg -A 5 'express.*frontend|frontend.*express'
# Check for similar Express framework exclusions in other tests
echo "Checking Express framework exclusions in other tests:"
rg -A 2 'skip.*express' e2e/19-19: Verify frontend integration with FastAPI framework
The change to assign "--frontend" for FastAPI framework needs verification to ensure it aligns with the application's architecture.
✅ Verification successful
Frontend integration pattern is consistent across templates
The appType assignment is correctly implemented and consistent with the codebase patterns:
- Same frontend integration logic is used in
streaming_template.spec.ts - The FastAPI-frontend relationship is consistently handled across test files
- Express framework is properly excluded from frontend tests in both streaming and multiagent templates
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The following scripts were executed for the analysis:
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#!/bin/bash
# Description: Verify frontend integration patterns across the codebase
# Check for similar frontend type assignments in other test files
echo "Checking frontend type assignments in other test files:"
rg -l 'appType.*=.*--frontend.*fastapi' e2e/
# Check for frontend integration patterns in FastAPI setup
echo "Checking FastAPI frontend integration patterns:"
rg -A 5 'fastapi.*frontend|frontend.*fastapi'
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# Let's try a different approach to verify the frontend integration patterns
# Search for appType assignments in test files
echo "Checking appType assignments in test files:"
rg -A 2 'appType.*=.*template' e2e/
# Search for frontend-related configurations or patterns
echo "Checking frontend-related patterns:"
rg -A 3 '--frontend' .
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rg -A 3 'templateFramework.*=.*("fastapi"|"express")' e2e/
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e2e/utils.ts (2)
141-141: LGTM: Port waiting logic simplified
The simplified port waiting logic is more maintainable and aligns well with the removal of externalPort. This change reduces complexity while maintaining the necessary functionality.
Line range hint 19-39: Verify test updates after port configuration changes
The removal of externalPort from RunCreateLlamaOptions simplifies the API, but this is a breaking change that requires verification of all dependent test files.
✅ Verification successful
Port configuration changes have been properly updated across the codebase
The verification shows that:
- No references to
externalPortremain in any e2e test files - All files using
RunCreateLlamaOptionshave been identified and the changes are consistent - The breaking change has been properly propagated across the test suite
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify that all test files have been updated to remove externalPort usage
# Search for any remaining references to externalPort in test files
echo "Checking for remaining externalPort references in test files:"
rg -l 'externalPort' 'e2e/**/*.ts' 'e2e/**/*.tsx'
# Search for test files that might need updates based on RunCreateLlamaOptions usage
echo "Checking for potential test files using RunCreateLlamaOptions:"
rg -l 'RunCreateLlamaOptions' 'e2e/**/*.ts' 'e2e/**/*.tsx'
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# First find all TypeScript files in e2e directory
echo "Finding all TypeScript files:"
fd -e ts -e tsx . e2e/
# Then search for externalPort references
echo -e "\nChecking for remaining externalPort references:"
rg 'externalPort' e2e/
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rg 'RunCreateLlamaOptions' e2e/
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index.ts (1)
329-329: LGTM! Port parameter alignment has been addressed.
The changes correctly simplify the port handling by using a single port parameter consistently between createApp and runApp functions, addressing the previous review comment about port parameter alignment.
Let's verify that the --external-port option has been completely removed:
✅ Verification successful
Based on the search results, I can now generate the final response:
Port parameter has been successfully simplified
The search results confirm that:
- The
--external-portoption has been completely removed from the codebase - Only a single
--portoption is used consistently throughout - Port handling is properly aligned between different components:
- CLI uses
--portoption - Express apps use
process.env.PORT || "8000" - FastAPI uses
APP_PORTenv var defaulting to "8000"
- CLI uses
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#!/bin/bash
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# Test: Search for "external" or "externalPort". Expect: No occurrences related to port configuration.
rg -i "external.*port|port.*external"
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🧹 Outside diff range and nitpick comments (3)
templates/types/streaming/fastapi/run.py (3)
51-51: Remove redundantdirs_exist_okparameter.Since we're ensuring the static directory is empty before copying (lines 47-49), the
dirs_exist_ok=Trueparameter is unnecessary.- shutil.copytree(frontend_dir / "out", static_dir, dirs_exist_ok=True) + shutil.copytree(frontend_dir / "out", static_dir)
58-61: Enhance error messages with build step context.The current error messages could be more specific about which build step failed.
except CalledProcessError as e: - raise SystemError(f"Build failed during {e.cmd}") from e + step = "dependency installation" if "install" in e.cmd else "build" + raise SystemError(f"Frontend {step} failed: {e.cmd} returned non-zero exit status {e.returncode}") from e except Exception as e: - raise SystemError(f"Build failed: {str(e)}") from e + raise SystemError(f"Frontend build failed during file operations: {str(e)}") from e
64-78: Consider adding timeout and poetry existence check.While the implementation is solid, consider these improvements:
- Add a check for poetry's existence
- Add timeout handling for the subprocess
+import sys +from shutil import which + def dev(): """ Start fastapi app using poetry's virtual environment. Raises: - SystemError: If the app fails to start + SystemError: If poetry is not found or the app fails to start """ + if which("poetry") is None: + raise SystemError( + "Poetry is not installed. Please install poetry first: https://python-poetry.org/docs/#installation" + ) + rich.print("\n[bold]Starting app[/bold]") try: - run(["poetry", "run", "python", "main.py"], check=True) + run(["poetry", "run", "python", "main.py"], check=True, timeout=300) # 5 min timeout except KeyboardInterrupt: rich.print("\n[bold yellow]Shutting down...[/bold yellow]") return + except TimeoutExpired: + raise SystemError("App startup timed out after 5 minutes") except Exception as e: raise SystemError(f"Failed to start app: {str(e)}") from e
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templates/types/streaming/fastapi/run.py (1)
9-24: LGTM! Clean and secure implementation.
The function follows best practices by:
- Using
whichfor safe package manager detection - Including proper type hints and documentation
- Providing clear error messages
leehuwuj
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Actionable comments posted: 6
🧹 Outside diff range and nitpick comments (7)
templates/types/streaming/fastapi/pyproject.toml (1)
26-26: Consider updating psutil to a newer versionThe current version (6.1.0) is quite old. Consider updating to the latest stable version (5.9.8) which includes important fixes and improvements.
-psutil = "^6.1.0" +psutil = "^5.9.8"templates/types/streaming/fastapi/run.py (4)
29-29: Add timeouts to prevent hanging on long-running commandsThe build commands could potentially hang indefinitely. Consider adding timeouts to prevent this.
-run([package_manager, "install"], cwd=frontend_dir, check=True) +run([package_manager, "install"], cwd=frontend_dir, check=True, timeout=300) # 5 minutes -run([package_manager, "run", "build"], cwd=frontend_dir, check=True) +run([package_manager, "run", "build"], cwd=frontend_dir, check=True, timeout=300) # 5 minutesAlso applies to: 32-32
56-57: Track TODO for production mode implementationThe production mode implementation is currently missing. This should be tracked for future implementation.
Would you like me to create a GitHub issue to track the implementation of the production mode?
82-87: Enhance server shutdown loggingAdd progress logging during server shutdown to improve observability.
for process in (frontend_process, backend_process): + rich.print(f"\n[bold yellow]Terminating process {process.pid}...[/bold yellow]") process.terminate() try: await asyncio.wait_for(process.wait(), timeout=5) + rich.print(f"[bold green]Process {process.pid} terminated gracefully[/bold green]") except asyncio.TimeoutError: + rich.print(f"[bold red]Force killing process {process.pid}[/bold red]") process.kill()
208-209: Improve exception chaining in process lookupThe exception should preserve the original error context.
- raise ProcessLookupError(f"Process {pid} not found or access denied") + raise ProcessLookupError(f"Process {pid} not found or access denied") from None🧰 Tools
🪛 Ruff
209-209: Within an
exceptclause, raise exceptions withraise ... from errorraise ... from Noneto distinguish them from errors in exception handling(B904)
templates/types/streaming/fastapi/app/middlewares/frontend.py (2)
22-52: Consider reusing thehttpx.AsyncClientsessionCreating a new
httpx.AsyncClientinstance for each request can be inefficient. Reusing the client session can improve performance by utilizing connection pooling.Apply this diff to reuse the client session:
+ self.client = httpx.AsyncClient() + async def _request_frontend(self, request: Request, path: str): - async with httpx.AsyncClient() as client: + client = self.client url = urllib.parse.urljoin(f"{self.frontend_endpoint}/", path) ... + async def __del__(self): + await self.client.aclose()
59-61: Ensure support for WebSocket connectionsThe middleware currently bypasses non-HTTP requests. If the frontend requires WebSocket support, consider handling
'websocket'connection types appropriately.Consider updating the condition:
if scope["type"] != "http": + if scope["type"] == "websocket": + # Optionally handle WebSocket proxying here + pass return await self.app(scope, receive, send)If WebSocket support is needed, implement the necessary logic to proxy WebSocket connections.
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- templates/types/streaming/fastapi/gitignore
- templates/types/streaming/fastapi/main.py
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templates/types/streaming/fastapi/app/middlewares/frontend.py (1)
Pattern templates/**: For files under the templates folder, do not report 'Missing Dependencies Detected' errors.
templates/types/streaming/fastapi/pyproject.toml (1)
Pattern templates/**: For files under the templates folder, do not report 'Missing Dependencies Detected' errors.
templates/types/streaming/fastapi/run.py (1)
Pattern templates/**: For files under the templates folder, do not report 'Missing Dependencies Detected' errors.
🪛 Ruff
templates/types/streaming/fastapi/run.py
209-209: Within an except clause, raise exceptions with raise ... from err or raise ... from None to distinguish them from errors in exception handling
(B904)
🔇 Additional comments (2)
templates/types/streaming/fastapi/pyproject.toml (2)
22-22: LGTM: Rich library addition
The rich library is a good choice for terminal formatting and the version constraint is appropriate.
10-12: Verify the existence of run module functions
The script entries look good and follow common patterns. However, let's verify that the referenced functions exist in the run module.
✅ Verification successful
Script entries are correctly implemented
The run.py module contains all the required functions referenced in the pyproject.toml scripts:
dev(): Starts development servers for both frontend and backend with hot reloadingprod(): Currently a placeholder for production mode (raises NotImplementedError)build(): Builds frontend assets and copies them to the static directory
The implementation is well-structured and includes proper error handling, logging, and process management.
🏁 Scripts executed
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# Search for the run module and its functions
rg -t python "def (dev|prod|build)" --type python
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#!/bin/bash
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fd -e py run.py
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rg "def (dev|prod|build)"
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Length of output: 6882
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🧹 Outside diff range and nitpick comments (4)
templates/types/streaming/fastapi/run.py (4)
52-54: Track TODO for production mode implementation.The TODO comment for production mode implementation should be tracked to ensure it's not forgotten.
Would you like me to create a GitHub issue to track the production mode implementation?
57-88: Consider capturing process output for debugging.While the process management is robust, consider capturing process output for debugging purposes. This would help in troubleshooting when servers fail to start or encounter issues.
frontend_process, frontend_port = await _run_frontend() frontend_endpoint = f"http://localhost:{frontend_port}" -backend_process = await _run_backend(frontend_endpoint) +backend_process = await _run_backend( + frontend_endpoint, + stdout=asyncio.subprocess.PIPE, + stderr=asyncio.subprocess.PIPE +)
120-120: Remove debug print statement.The print statement for debugging the return code should be removed from production code.
- print("Return code:", frontend_process.returncode)
204-218: Consider using contextlib for cleaner socket handling.While the implementation is correct, it could be more elegant using contextlib for socket operations.
+from contextlib import closing + def _is_bindable_port(port: int) -> bool: """Check if a port is available by attempting to connect to it.""" - with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s: + with closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as s: try: s.connect(("localhost", port)) return False except ConnectionRefusedError: return True except socket.error: return True
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templates/types/streaming/fastapi/run.py (3)
1-13: LGTM! Well-organized imports and constants.
The imports are appropriately organized and the constants are well-defined at the module level.
15-46: LGTM! Robust build implementation.
The build function implementation is secure and reliable with:
- Proper error handling and cleanup
- Safe subprocess execution
- Clear user feedback
151-185: LGTM! Robust package management implementation.
The implementation is secure and thorough with:
- Windows compatibility
- Multiple package manager support
- Proper error handling
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (12)
templates/components/agents/python/financial_report/README-template.md (2)
40-43: Consider adding security recommendations for production.While the production setup is clearly documented, it would be helpful to include security recommendations regarding CORS configuration in production.
Consider adding a note like:
The API allows CORS for all origins to simplify development. For **production**, you should run: ```shell poetry run prod
+> Note: In production, configure CORS to allow only trusted origins by setting the
ALLOWED_ORIGINSenvironment variable.<details> <summary>🧰 Tools</summary> <details> <summary>🪛 Markdownlint</summary> 42-42: null Fenced code blocks should have a language specified (MD040, fenced-code-language) </details> </details> --- `43-43`: **Add shell language specification to code fence.** For better documentation and syntax highlighting, specify the language for the code fence. ```diff -``` +```shell poetry run prod</blockquote></details> <details> <summary>templates/components/agents/python/form_filling/README-template.md (2)</summary><blockquote> `46-49`: **Security consideration for CORS configuration.** The documentation correctly highlights that allowing CORS for all origins should only be used in development. However, it would be helpful to provide more specific guidance for production settings. Consider adding a note about configuring CORS for specific origins in production, like: ```diff The API allows CORS for all origins to simplify development. For **production**, you should run: +> **_Important:_** In production, configure CORS to allow only specific trusted origins by setting the `CORS_ORIGINS` environment variable. +🧰 Tools
🪛 Markdownlint
48-48: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
48-48: Add language specification to code block.The code block should specify a language for better syntax highlighting and documentation consistency.
-``` +```shell poetry run prod<details> <summary>🧰 Tools</summary> <details> <summary>🪛 Markdownlint</summary> 48-48: null Fenced code blocks should have a language specified (MD040, fenced-code-language) </details> </details> </blockquote></details> <details> <summary>templates/types/streaming/fastapi/main.py (2)</summary><blockquote> `29-36`: **Consider adding type hints to improve code clarity.** The function modification is well-implemented, but could benefit from type hints for better maintainability. ```diff -def mount_static_files(directory, path, html=False): +def mount_static_files(directory: str, path: str, html: bool = False):
Line range hint
73-78: Consider adding environment variable validation.While the environment variable usage is correct, consider adding validation for critical variables like APP_PORT.
- app_port = int(os.getenv("APP_PORT", "8000")) + try: + app_port = int(os.getenv("APP_PORT", "8000")) + if not (0 < app_port < 65536): + raise ValueError("Port must be between 1 and 65535") + except ValueError as e: + logger.error(f"Invalid APP_PORT: {e}") + app_port = 8000templates/components/agents/python/blog/README-template.md (1)
52-55: Add language specification to the fenced code block.The command block should specify the language for better syntax highlighting and documentation consistency.
Apply this change:
The API allows CORS for all origins to simplify development. For **production**, you should run: -``` +```shell poetry run prod<details> <summary>🧰 Tools</summary> <details> <summary>🪛 Markdownlint</summary> 54-54: null Fenced code blocks should have a language specified (MD040, fenced-code-language) </details> </details> </blockquote></details> <details> <summary>templates/types/streaming/fastapi/README-template.md (3)</summary><blockquote> `24-31`: **Clarify the browser access instructions** The current instructions don't specify what users will see when accessing localhost:8000. Consider generalizing it to handle both frontend and backend cases. Apply this diff to clarify the instructions: ```diff Third, run the app: ```bash poetry run dev-Open http://localhost:8000 with your browser to start the app.
+Open http://localhost:8000 with your browser to start the app. If you didn't generate a frontend, you will see the Swagger UI of the backend.<details> <summary>🧰 Tools</summary> <details> <summary>🪛 Markdownlint</summary> 26-26: null Fenced code blocks should have a language specified (MD040, fenced-code-language) </details> </details> --- `55-58`: **Enhance production deployment security guidance** While the CORS warning is helpful, consider adding more production security considerations. Add security recommendations like: ```diff The API allows CORS for all origins to simplify development. For **production**, you should: +- Configure specific allowed origins in the CORS settings +- Enable HTTPS +- Set appropriate rate limiting +- Review and adjust logging levels ```bash poetry run prod<details> <summary>🧰 Tools</summary> <details> <summary>🪛 Markdownlint</summary> 57-57: null Fenced code blocks should have a language specified (MD040, fenced-code-language) </details> </details> --- `26-26`: **Add language specifiers to code blocks** Add language specifiers to the code blocks for better syntax highlighting. Apply these changes: 1. Add 'bash' to the code block at line 26 2. Add 'bash' to the code block at line 57 Also applies to: 57-57 <details> <summary>🧰 Tools</summary> <details> <summary>🪛 Markdownlint</summary> 26-26: null Fenced code blocks should have a language specified (MD040, fenced-code-language) </details> </details> </blockquote></details> <details> <summary>templates/types/streaming/fastapi/run.py (2)</summary><blockquote> `21-52`: **Consider enhancing error messages with more context.** The build function is well-structured with proper error handling. However, the error messages could be more descriptive. Consider this enhancement: ```diff - raise SystemError(f"Build failed during {e.cmd}") from e + raise SystemError(f"Build failed during '{' '.join(e.cmd)}'. Exit code: {e.returncode}") from e
263-270: Consider adding a maximum retry count for port finding.The current implementation might try too many ports before giving up. Consider limiting the range to a reasonable number of attempts.
Consider this enhancement:
-def _find_free_port(start_port: int) -> int: +def _find_free_port(start_port: int, max_attempts: int = 100) -> int: """ Find a free port starting from the given port number. + + Args: + start_port: The port number to start searching from + max_attempts: Maximum number of ports to try + + Raises: + SystemError: If no free port is found within max_attempts """ - for port in range(start_port, 65535): + for port in range(start_port, min(start_port + max_attempts, 65535)): if _is_bindable_port(port): return port - raise SystemError("No free port found") + raise SystemError(f"No free port found after trying {max_attempts} ports starting from {start_port}")
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🚧 Files skipped from review as they are similar to previous changes (1)
- templates/types/streaming/fastapi/app/middlewares/frontend.py
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templates/components/agents/python/blog/README-template.md (1)
Pattern templates/**: For files under the templates folder, do not report 'Missing Dependencies Detected' errors.
templates/components/agents/python/financial_report/README-template.md (1)
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templates/components/agents/python/form_filling/README-template.md (1)
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templates/types/streaming/fastapi/README-template.md (1)
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templates/types/streaming/fastapi/main.py (1)
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templates/types/streaming/fastapi/run.py (1)
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🪛 Markdownlint
templates/components/agents/python/blog/README-template.md
54-54: null
Fenced code blocks should have a language specified
(MD040, fenced-code-language)
templates/components/agents/python/financial_report/README-template.md
42-42: null
Fenced code blocks should have a language specified
(MD040, fenced-code-language)
templates/components/agents/python/form_filling/README-template.md
48-48: null
Fenced code blocks should have a language specified
(MD040, fenced-code-language)
templates/types/streaming/fastapi/README-template.md
26-26: null
Fenced code blocks should have a language specified
(MD040, fenced-code-language)
57-57: null
Fenced code blocks should have a language specified
(MD040, fenced-code-language)
🪛 Ruff
templates/types/streaming/fastapi/run.py
171-171: Do not use mutable data structures for argument defaults
Replace with None; initialize within function
(B006)
🔇 Additional comments (9)
templates/components/agents/python/financial_report/README-template.md (1)
24-24: LGTM! Clear and simplified development command.
The new poetry run dev command follows modern Python project conventions and improves user experience.
templates/types/streaming/fastapi/main.py (5)
2-2: LGTM! Import structure follows best practices.
The import order is correct, with environment variables being loaded before other imports, and the new imports are properly organized.
Also applies to: 12-12
39-44: LGTM! Proper route and static file mounting setup.
The order of mounting (API routes followed by static files) is correct and the paths are well-structured to avoid conflicts.
46-56: LGTM! Good environment-specific configuration with proper logging.
The conditional setup for development environment is well-structured with appropriate fallback behavior and warning logs.
69-71: LGTM! Proper production setup with static file serving.
The production environment configuration is secure and well-implemented.
49-53: Verify the excluded paths implementation.
Let's ensure that the excluded_paths set comprehension correctly captures all API routes to prevent proxy conflicts.
✅ Verification successful
Let me check the route definitions in main.py to ensure we have a complete picture.
Let me check the API router to see all the routes that should be excluded.
Let me try to find the API router file using fd.
Based on the code analysis, I can now provide the final response:
The excluded paths implementation is correctly implemented and secure.
The implementation is verified to be correct because:
- The middleware correctly collects all routes via
set(route.path for route in app.router.routes), which includes:- All API routes from the included router (
app.include_router(api_router, prefix="/api")) - The static file mounts for
/api/files/dataand/api/files/output - The docs redirect route in dev mode
- All API routes from the included router (
- The
_is_excluded_pathmethod in FrontendProxyMiddleware properly checks if incoming paths start with any excluded path - The middleware is only active in dev mode with proper environment checks
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ast-grep --pattern 'class FrontendProxyMiddleware:
$$$
async def __call__($$$):
$$$'
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rg -l 'app\.(?:get|post|put|delete|patch)\s*\(' --type py
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cat templates/types/streaming/fastapi/main.py
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fd -t f routers.py
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templates/components/agents/python/blog/README-template.md (1)
35-35: LGTM! Command simplification improves user experience.
The simplified command poetry run dev is more intuitive and follows common development practices.
templates/types/streaming/fastapi/run.py (2)
1-19: LGTM! Well-structured imports and constants.
The imports are properly organized, and constants are defined with appropriate environment variable fallbacks.
62-128: LGTM! Robust server management implementation.
The server management functions handle process lifecycle, error cases, and graceful shutdown effectively. The timeout-based termination is a good practice.
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (3)
templates/types/streaming/fastapi/app/middlewares/frontend.py (3)
11-25: LGTM with a minor documentation enhancementThe class initialization is well-structured with proper type hints. Consider enhancing the docstring to include parameter descriptions.
Add parameter descriptions to the docstring:
""" Proxy requests to the frontend development server + + Args: + app: The ASGI application instance + frontend_endpoint: The URL of the frontend development server + excluded_paths: Set of path prefixes to exclude from proxying """
41-48: Consider adding request cancellation handlingThe proxy request should be cancelled if the client disconnects to prevent unnecessary processing.
+ # Create a task for the proxy request + request_task = asyncio.create_task( + client.request( + method=request.method, + url=url, + headers=headers, + content=body, + follow_redirects=True, + ) + ) + + # Handle client disconnection + disconnect = asyncio.create_task(receive()) + done, pending = await asyncio.wait( + [request_task, disconnect], + return_when=asyncio.FIRST_COMPLETED + ) + + if disconnect in done: + request_task.cancel() + return None + + response = await request_task
62-66: Consider optimizing path exclusion checks and adding path normalizationThe current implementation checks each excluded path sequentially. For better security and performance:
- Normalize paths before comparison
- Consider using a trie structure for large sets of excluded paths
def _is_excluded_path(self, path: str) -> bool: + # Normalize path for consistent comparison + normalized_path = posixpath.normpath(path).lstrip('/') return any( - path.startswith(excluded_path) for excluded_path in self.excluded_paths + normalized_path.startswith(excluded_path) for excluded_path in self.excluded_paths )
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🔇 Additional comments (2)
templates/types/streaming/fastapi/app/middlewares/frontend.py (2)
1-8: LGTM: Imports and logging setup are appropriate
The imports are well-organized and the logging configuration is correctly set up using uvicorn's logger.
26-31: LGTM: Request handling method signature is well-defined
The timeout parameter with a reasonable default value is a good addition for controlling request timeouts.
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (9)
templates/components/agents/python/financial_report/README-template.md (1)
42-44: Add language specification to code blockFor consistency and proper syntax highlighting, specify the language for the code block.
-``` +```shell poetry run prod<details> <summary>🧰 Tools</summary> <details> <summary>🪛 Markdownlint</summary> 42-42: null Fenced code blocks should have a language specified (MD040, fenced-code-language) </details> </details> </blockquote></details> <details> <summary>helpers/run-app.ts (1)</summary><blockquote> `64-79`: **Improve error handling and maintainability** While the error handling is good, there are several improvements that could be made: 1. Validate input parameters 2. Make the runner selection more maintainable 3. Add more descriptive error messages Consider this improved implementation: ```diff export async function runApp( appPath: string, template: string, frontend: boolean, framework: TemplateFramework, port?: number, ): Promise<void> { + // Validate input parameters + if (!appPath) throw new Error('appPath is required'); + if (!template) throw new Error('template is required'); + if (!framework) throw new Error('framework is required'); + + // Define runner mapping + const runners = { + extractor: runReflexApp, + default: { + fastapi: runFastAPIApp, + nextjs: runTSApp, + }, + }; + try { // Start the app const defaultPort = framework === "nextjs" ? 3000 : 8000; - const appRunner = - template === "extractor" - ? runReflexApp - : framework === "fastapi" - ? runFastAPIApp - : runTSApp; + const appRunner = template === "extractor" + ? runners.extractor + : runners.default[framework] || runners.default.fastapi; + + console.log(`Starting ${template} app with ${framework} framework...`); await appRunner(appPath, port || defaultPort); } catch (error) { - console.error("Failed to run app:", error); + console.error(`Failed to run ${template} app with ${framework} framework:`, error); throw error; } }templates/components/agents/python/form_filling/README-template.md (1)
46-49: Add shell language specification to the code block.The production section is a good addition. However, the code block should specify the language for better syntax highlighting.
Apply this change:
To start the app in **production**, run: -``` +```shell poetry run prod<details> <summary>🧰 Tools</summary> <details> <summary>🪛 Markdownlint</summary> 48-48: null Fenced code blocks should have a language specified (MD040, fenced-code-language) </details> </details> </blockquote></details> <details> <summary>templates/components/agents/python/blog/README-template.md (1)</summary><blockquote> `54-55`: **Add shell language specification to the code block.** For better documentation and syntax highlighting, specify the language for the code block. ```diff -``` +```shell poetry run prod<details> <summary>🧰 Tools</summary> <details> <summary>🪛 Markdownlint</summary> 54-54: null Fenced code blocks should have a language specified (MD040, fenced-code-language) </details> </details> </blockquote></details> <details> <summary>templates/types/streaming/fastapi/README-template.md (2)</summary><blockquote> `30-31`: **Consider generalizing the browser instruction and adding language to code blocks.** 1. The browser instruction could be more informative by mentioning both frontend and Swagger UI cases. 2. Code blocks should specify the language for better syntax highlighting. Apply these changes: ```diff -Open [http://localhost:8000](http://localhost:8000) with your browser to start the app. +Open [http://localhost:8000](http://localhost:8000) with your browser to start the app. If you didn't generate a frontend, then you will reach the Swagger UI of the backend.And add language specifications to the code blocks:
-``` +```bash poetry run dev
55-59: Add language specification to the code block.The production command looks good, but the code block should specify the language for better documentation.
Add language specification to the code block:
-``` +```bash poetry run prod🧰 Tools
🪛 Markdownlint
57-57: null
Fenced code blocks should have a language specified(MD040, fenced-code-language)
templates/types/streaming/fastapi/run.py (3)
21-52: Use the STATIC_DIR constant for consistency.The function creates a local
static_dirvariable instead of using theSTATIC_DIRconstant defined at the module level.- static_dir = Path("static") + static_dir = STATIC_DIR try: package_manager = _get_node_package_manager()
62-106: Consider adding a timeout constant.The implementation is robust, but the timeout value (5 seconds) should be defined as a constant at the module level for consistency and maintainability.
+PROCESS_TERMINATION_TIMEOUT = 5 # seconds async def start_development_servers(): # ... existing code ... try: - await asyncio.wait_for(process.wait(), timeout=5) + await asyncio.wait_for(process.wait(), timeout=PROCESS_TERMINATION_TIMEOUT)
130-168: Enhance error messages for better debugging.The error messages could be more descriptive to help with troubleshooting.
if frontend_process.returncode is not None: - raise RuntimeError("Could not start frontend dev server") + raise RuntimeError( + f"Frontend dev server failed to start (exit code: {frontend_process.returncode}). " + "Check the package.json for correct dev script configuration." + )
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📒 Files selected for processing (8)
helpers/devcontainer.ts(1 hunks)helpers/run-app.ts(2 hunks)templates/components/agents/python/blog/README-template.md(2 hunks)templates/components/agents/python/financial_report/README-template.md(2 hunks)templates/components/agents/python/form_filling/README-template.md(2 hunks)templates/types/streaming/fastapi/README-template.md(2 hunks)templates/types/streaming/fastapi/main.py(3 hunks)templates/types/streaming/fastapi/run.py(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
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templates/components/agents/python/blog/README-template.md (1)
Pattern templates/**: For files under the templates folder, do not report 'Missing Dependencies Detected' errors.
templates/components/agents/python/financial_report/README-template.md (1)
Pattern templates/**: For files under the templates folder, do not report 'Missing Dependencies Detected' errors.
templates/components/agents/python/form_filling/README-template.md (1)
Pattern templates/**: For files under the templates folder, do not report 'Missing Dependencies Detected' errors.
templates/types/streaming/fastapi/README-template.md (1)
Pattern templates/**: For files under the templates folder, do not report 'Missing Dependencies Detected' errors.
templates/types/streaming/fastapi/run.py (1)
Pattern templates/**: For files under the templates folder, do not report 'Missing Dependencies Detected' errors.
🪛 Markdownlint
templates/components/agents/python/blog/README-template.md
54-54: null
Fenced code blocks should have a language specified
(MD040, fenced-code-language)
templates/components/agents/python/financial_report/README-template.md
42-42: null
Fenced code blocks should have a language specified
(MD040, fenced-code-language)
templates/components/agents/python/form_filling/README-template.md
48-48: null
Fenced code blocks should have a language specified
(MD040, fenced-code-language)
templates/types/streaming/fastapi/README-template.md
26-26: null
Fenced code blocks should have a language specified
(MD040, fenced-code-language)
57-57: null
Fenced code blocks should have a language specified
(MD040, fenced-code-language)
🪛 Ruff
templates/types/streaming/fastapi/run.py
171-171: Do not use mutable data structures for argument defaults
Replace with None; initialize within function
(B006)
🔇 Additional comments (13)
templates/components/agents/python/financial_report/README-template.md (3)
24-24: LGTM: Command update aligns with project standards
The simplified development command follows the new command structure implemented across the project.
38-38: Previous review suggestion implemented correctly
43-43: Verify production command implementation
The simplified production command follows the new structure, but let's verify its implementation.
✅ Verification successful
Let me gather more information about the implementation of the prod command.
Production command is properly implemented
The poetry run prod command is correctly defined in pyproject.toml and implemented in run.py. The implementation:
- Builds frontend assets if needed
- Starts the backend server in production mode
- Handles proper process management and cleanup
🏁 Scripts executed
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# Description: Verify the existence and implementation of the 'prod' command
# Look for pyproject.toml or similar files that might define these commands
fd -t f "pyproject.toml|poetry.toml" --exec cat {} \;
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#!/bin/bash
# Search for the run.py or similar files that might contain the prod implementation
fd -t f "run.py" --exec cat {} \;
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ast-grep --pattern 'def prod():
$$$'
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helpers/run-app.ts (3)
10-12:
Security risk: Remove shell: true from spawn options
Using shell: true can introduce security vulnerabilities, especially if any part of the command or args comes from user input. It also adds unnecessary performance overhead.
Apply this diff to remove the security risk:
spawn(command, args, {
...options,
- shell: true,
})29-36: 🛠️ Refactor suggestion
Add port validation and improve logging
The function should validate the port number and provide clear logging about the startup process.
Apply this diff to improve the implementation:
export function runReflexApp(appPath: string, port: number) {
+ if (port < 1 || port > 65535) {
+ throw new Error(`Invalid port number: ${port}. Port must be between 1 and 65535.`);
+ }
+ console.log(`Starting Reflex app on port ${port}`);
const commandArgs = [
"run",
"reflex",43-48: 🛠️ Refactor suggestion
Add port validation and improve logging
The function should validate the port number and provide clear logging about the startup process.
Apply this diff to improve the implementation:
export function runFastAPIApp(appPath: string, port: number) {
+ if (port < 1 || port > 65535) {
+ throw new Error(`Invalid port number: ${port}. Port must be between 1 and 65535.`);
+ }
+ console.log(`Starting FastAPI app on port ${port}`);
return createProcess("poetry", ["run", "dev"], {
stdio: "inherit",
cwd: appPath,templates/components/agents/python/form_filling/README-template.md (2)
19-19: Skipping comment as it would duplicate existing review.
44-44: LGTM! Clear browser instructions added.
The added instruction provides clear guidance for accessing the application.
templates/components/agents/python/blog/README-template.md (1)
35-35: LGTM! Command simplification improves user experience.
The simplified command poetry run dev makes it easier for users to start the development server.
templates/types/streaming/fastapi/README-template.md (1)
24-27: LGTM! Command change aligns with project standards.
The change to use poetry run dev is consistent with the standardization effort across READMEs.
🧰 Tools
🪛 Markdownlint
26-26: null
Fenced code blocks should have a language specified
(MD040, fenced-code-language)
templates/types/streaming/fastapi/run.py (3)
1-19: LGTM! Well-structured imports and constants.
The code demonstrates good practices:
- Proper organization of imports
- Use of Path objects for directory handling
- Environment variables with sensible defaults
54-60: LGTM! Clean wrapper functions.
The functions provide a clean synchronous interface to the async implementation.
194-275: LGTM! Well-implemented utility functions.
The utility functions demonstrate good practices:
- Clear and concise implementations
- Proper Windows compatibility
- Comprehensive error handling
- Informative docstrings
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (1)
helpers/run-app.ts (1)
67-68: Document the default port logicThe default port selection logic could benefit from a comment explaining why specific ports are chosen for different frameworks.
Apply this diff to add documentation:
const defaultPort = + // Use port 3000 for Next.js (standard Next.js port) and Reflex extractor template + // Use port 8000 for all other frameworks (standard FastAPI port) framework === "nextjs" || template === "extractor" ? 3000 : 8000;
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helpers/run-app.ts(2 hunks)index.ts(2 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
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🔇 Additional comments (3)
helpers/run-app.ts (3)
10-12:
Security risk: Remove shell: true from spawn options
Using shell: true can introduce security vulnerabilities, especially if any part of the command or args comes from user input. It also adds unnecessary performance overhead.
Apply this diff to fix the issue:
spawn(command, args, {
...options,
- shell: true,
})29-36:
Add port validation and clarify backend port behavior
The function needs validation for the port number and should clarify the backend port behavior since Reflex typically requires both frontend and backend ports.
Apply this diff to add validation and improve clarity:
export function runReflexApp(appPath: string, port: number) {
+ if (port < 1 || port > 65534) { // Ensure space for backend port
+ throw new Error(`Invalid port number: ${port}. Port must be between 1 and 65534.`);
+ }
+ // Backend port is automatically set to port+1 by Reflex
+ console.log(`Starting Reflex app with frontend port ${port} (backend will use ${port + 1})`);
const commandArgs = [
"run",
"reflex",59-64: Verify the removal of the frontend parameter
The frontend parameter has been removed from the function signature. Please verify that this doesn't break any existing functionality where the frontend parameter was used to determine behavior.
✅ Verification successful
Removal of frontend parameter is safe and intentional
Based on the git history, the removal of the frontend parameter was part of a cleanup where the frontend-specific logic was also removed. The previous code used this parameter to conditionally build the frontend for "streaming" or "multiagent" templates, but this logic has been completely removed from the function. There are no remaining references to this parameter in the current implementation, indicating this was an intentional change that properly removed all related functionality.
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ast-grep --pattern 'runApp($$$, $_, $_, $_, $_, $_)'
Length of output: 108
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rg -A 5 "export.*function runApp" --type ts
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rg -B 2 -A 2 "runApp.*frontend|frontend.*runApp" --type ts
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# Look for git history of the file to see the previous version
git log -p helpers/run-app.ts | grep -A 15 "function runApp"
# Search for any test files that might be using runApp
fd "test|spec" -e ts -x rg "runApp" {}
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Is there a reason the pro option to generate a nextjs frontend when choosing express framework backend has been removed? |
|
yes, it simplifies the code generator, you can still generate one nextjs frontend and one express backend separately |
thanks for the info! What's the best way to create those seperately? Can't seem to find those options |
Summary by CodeRabbit
Release Notes
New Features
FrontendProxyMiddlewarefor enhanced request handling between FastAPI and frontend servers.Improvements
Bug Fixes
externalPortreferences to improve configuration consistency.Documentation