fix: use .js and index.js in imports (#974)

Author: ehmicky

.eslintrc.cjs

@@ -3,6 +3,8 @@ const { overrides } = require('@netlify/eslint-config-node')
 module.exports = {
   extends: '@netlify/eslint-config-node',
   rules: {
+    'import/extensions': ['error', 'ignorePackages'],
+    'node/no-missing-import': 'off',
     // This rule enforces using Buffers with `JSON.parse()`. However, TypeScript
     // does not recognize yet that `JSON.parse()` accepts Buffers as argument.
     'unicorn/prefer-json-parse-buffer': 'off',
@@ -12,6 +14,9 @@ module.exports = {
     {
       files: '*.ts',
       rules: {
+        // Pure ES modules with TypeScript require using `.js` instead of `.ts`
+        // in imports
+        'import/extensions': 'off',
         'import/no-namespace': 'off',
       },
     },

src/bin.ts

@@ -4,8 +4,8 @@ import { argv, exit } from 'process'
 import yargs from 'yargs'
 import { hideBin } from 'yargs/helpers'
 
-import type { ArchiveFormat } from './archive'
-import { zipFunctions } from './main'
+import type { ArchiveFormat } from './archive.js'
+import { zipFunctions } from './main.js'
 
 // CLI entry point
 const runCli = async function () {