diff --git a/.eslintrc.js b/.eslintrc.js
index 0536a49192e..94a8f704e72 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -48,7 +48,7 @@ module.exports = {
       },
     },
     {
-      files: ['@xen-orchestra/{web-core,lite,web}/**/*.{vue,ts}'],
+      files: ['@vates/**/*.{ts}', '@xen-orchestra/{web-core,lite,web}/**/*.{vue,ts}'],
       parser: 'vue-eslint-parser',
       parserOptions: {
         sourceType: 'module',
@@ -79,6 +79,10 @@ module.exports = {
         XO_LITE_GIT_HEAD: true,
       },
       rules: {
+        // allow "use strict"
+        strict: 'off',
+        // allow "require"
+        '@typescript-eslint/no-var-requires': 'off',
         'import/order': [
           'error',
           {
diff --git a/@vates/parse-duration/package.json b/@vates/parse-duration/package.json
index ebe0062a769..1d1d3ce5103 100644
--- a/@vates/parse-duration/package.json
+++ b/@vates/parse-duration/package.json
@@ -27,6 +27,9 @@
     "ms": "^2.1.2"
   },
   "scripts": {
-    "postversion": "npm publish --access public"
-  }
+    "postversion": "npm publish --access public",
+    "build": "tsc",
+    "dev": "tsc --watch"
+  },
+  "main": "dist/index.js"
 }
diff --git a/@vates/parse-duration/index.js b/@vates/parse-duration/src/index.ts
similarity index 67%
rename from @vates/parse-duration/index.js
rename to @vates/parse-duration/src/index.ts
index 66783a9def9..8233c125ce4 100644
--- a/@vates/parse-duration/index.js
+++ b/@vates/parse-duration/src/index.ts
@@ -2,11 +2,11 @@
 
 const ms = require('ms')
 
-exports.parseDuration = value => {
+exports.parseDuration = (value: number | string): number => {
   if (typeof value === 'number') {
     return value
   }
-  const duration = ms(value)
+  const duration: number = ms(value)
   if (duration === undefined) {
     throw new TypeError(`not a valid duration: ${value}`)
   }
diff --git a/@vates/parse-duration/tsconfig.json b/@vates/parse-duration/tsconfig.json
new file mode 100644
index 00000000000..44a364a09af
--- /dev/null
+++ b/@vates/parse-duration/tsconfig.json
@@ -0,0 +1,18 @@
+{
+  "compilerOptions": {
+    "esModuleInterop": true,
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "newLine": "lf",
+    "noImplicitAny": true,
+    "strict": false,
+    "skipLibCheck": true,
+    "baseUrl": ".",
+    "sourceMap": false,
+    "strictNullChecks": true,
+    "target": "ES2015",
+    "outDir": "./dist",
+    "rootDir": "./src"
+  },
+  "exclude": ["node_modules", "dist"]
+}
diff --git a/CHANGELOG.unreleased.md b/CHANGELOG.unreleased.md
index 28f167ebf88..d806600e578 100644
--- a/CHANGELOG.unreleased.md
+++ b/CHANGELOG.unreleased.md
@@ -40,6 +40,7 @@
 
 <!--packages-start-->
 
+- @vates/parse-duration minor
 - @xen-orchestra/lite minor
 - @xen-orchestra/web minor
 - @xen-orchestra/web-core minor