generate.js

// eslint-disable-next-line @typescript-eslint/no-var-requires
const fs = require("fs");

const template = `
import HttpError, { Literal, ErrorInfo } from '../HttpError'
import { schema } from ''class-schema''

/**
 * Http Error %code%: %name%
 */
@schema({ description: '%name%' })
export default class %short% extends HttpError {
	static CODE = %code%

	constructor(mesg: string, info?: ErrorInfo) {
		super(%short%.CODE, info?.name || '%name%', mesg, info?.key, info?.data)
	}
}
`;

const errors = {
  "4xx": [
    [400, "Bad Request"],
    [401, "Unauthorized"],
    [402, "Payment Required"],
    [403, "Forbidden"],
    [404, "Not Found"],
    [405, "Method Not Allowed"],
    [406, "Not Acceptable"],
    [407, "Proxy Authentication Required"],
    [408, "Request Timeout"],
    [409, "Conflict"],
    [410, "Gone"],
    [411, "Length Required"],
    [412, "Precondition Failed"],
    [413, "Payload Too Large"],
    [414, "URI Too Long"],
    [415, "Unsupported Media Type"],
    [416, "Range Not Satisfiable"],
    [417, "Expectation Failed"],
    [418, "Im a teapot"],
    [421, "Misdirected Request"],
    [422, "Unprocessable Entity"],
    [423, "Locked"],
    [424, "Failed Dependency"],
    [425, "Too Early"],
    [426, "Upgrade Required"],
    [428, "Precondition Required"],
    [429, "Too Many Requests"],
    [431, "Request Header Fields Too Large"],
    [451, "Unavailable For Legal Reasons"],
  ],
  "5xx": [
    [500, "Internal Server Error"],
    [501, "Not Implemented"],
    [502, "Bad Gateway"],
    [503, "Service Unavailable"],
    [504, "Gateway Timeout"],
    [505, "HTTP Version Not Supported"],
    [506, "Variant Also Negotiates"],
    [507, "Insufficient Storage"],
    [508, "Loop Detected"],
    [509, "Bandwidth Limit Exceeded"],
    [510, "Not Extended"],
    [511, "Network Authentication Required"],
  ],
};

for (const [stx, items] of Object.entries(errors)) {
  for (const [code, name] of items) {
    const short = name.split(" ").join("");

    fs.writeFileSync(
      `src/${stx}/${short}.ts`,
      template
        .replace(/%short%/g, short)
        .replace(/%name%/g, name)
        .replace(/%code%/g, code)
    );

    console.log(`export { default as ${short} } from './${stx}/${short}'`);
  }
}