streetsidesoftwarets2mjs
Rename TypeScript created ESM .js files to .mjs
This tool takes output from tsc and copies/renames the files.
file.js=>file.mjsfile.js.map=>file.mjs.mapfile.d.ts=>file.d.mtsfile.d.ts.map=>file.d.mts.map
dist/code.js -> dist/code.mjs
import * as path from 'path';
import { lib } from 'package/lib/index.js'
-import { findFiles } from './findFiles.js';
+import { findFiles } from './findFiles.mjs';dist/index.d.ts -> dist/index.d.mts
-export { PrimeNumber, Tuple, GUID, Address, Person, Annotation, } from './types.js';
+export { PrimeNumber, Tuple, GUID, Address, Person, Annotation, } from './types.mjs';
-export { lookUpPerson } from './lookup.js';
+export { lookUpPerson } from './lookup.mjs';Usage
This is an example on how to create a package that exports both CommonJS and ESM from TypeScript source.
tsconfig.esm.json
{
"$schema": "https://json.schemastore.org/tsconfig",
"extends": "@tsconfig/node18/tsconfig.json",
"compilerOptions": {
"declaration": true,
"module": "ES2022",
"moduleResolution": "node",
"outDir": "dist/esm",
"sourceMap": true
},
"include": ["src"]
}tsconfig.cjs.json
{
"$schema": "https://json.schemastore.org/tsconfig",
"extends": "@tsconfig/node18/tsconfig.json",
"compilerOptions": {
"declaration": true,
"module": "NodeNext",
"moduleResolution": "NodeNext",
"outDir": "dist/cjs",
"sourceMap": true
},
"include": ["src"]
}package.json
{
"type": "commonjs",
"main": "dist/csj/index.js",
"module": "dist/esm/index.mjs",
"types": "dist/cjs/index.d.ts",
"exports": {
".": {
"import": "./dist/esm/index.mjs",
"require": "./dist/cjs/index.js"
}
}
}tsc -p tsconfig.cjs.json
tsc -p tsconfig.esm.json
ts2mjs dist/esmHelp
Usage: ts2mjs [options] <files...>
Rename ESM .js files to .mjs
Arguments:
files The files to rename.
Options:
-o, --output <dir> The output directory.
--cwd <dir> The current working directory.
--root <dir> The root directory.
--dry-run Dry Run do not update files.
--no-must-find-files No error if files are not found.
--no-enforce-root Do not fail if relative `.js` files outside of the root
are imported.
--color Force color.
--no-color Do not use color.
-v, --verbose Verbose mode
-V, --version output the version number
-h, --help display help for command
Brought to you by
Street Side Software