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Use .mjs extension for esm files #453

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Use .mjs extension for esm files #453

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ae55360
Use .mjs extension for esm files
IanVS Apr 28, 2022
93a63c0
Use array for `input`
IanVS Sep 19, 2022
9f02ec0
Fix chunk names
IanVS Sep 19, 2022
42cb5b6
Handle extend-expect.js
IanVS Sep 19, 2022
bb1742f
Add extensions for packages that need them in node ESM
IanVS Sep 19, 2022
3edeee3
Remove extend-expect export
IanVS Sep 22, 2022
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16 changes: 9 additions & 7 deletions package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -2,16 +2,17 @@
"name": "@testing-library/jest-dom",
"version": "0.0.0-semantically-released",
"description": "Custom jest matchers to test the state of the DOM",
"main": "dist/cjs/index.js",
"module": "dist/esm/index.js",
"main": "dist/index.js",
"module": "dist/index.mjs",
"type": "commonjs",
"exports": {
".": {
"require": "./dist/cjs/index.js",
"import": "./dist/esm/index.js"
"require": "./dist/index.js",
"import": "./dist/index.mjs"
},
"./matchers": {
"require": "./dist/cjs/matchers.js",
"import": "./dist/esm/matchers.js"
"require": "./dist/matchers.js",
"import": "./dist/matchers.mjs"
}
},
"engines": {
Expand All @@ -20,7 +21,7 @@
"yarn": ">=1"
},
"scripts": {
"build": "rollup -c",
"build": "rimraf dist && rollup -c",
"format": "kcd-scripts format",
"lint": "kcd-scripts lint",
"setup": "npm install && npm run validate -s",
Expand Down Expand Up @@ -58,6 +59,7 @@
"jsdom": "^16.2.1",
"kcd-scripts": "^11.1.0",
"pretty-format": "^25.1.0",
"rimraf": "^3.0.2",
"rollup": "^2.68.0"
},
"eslintConfig": {
Expand Down
25 changes: 18 additions & 7 deletions rollup.config.js
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Original file line number Diff line number Diff line change
@@ -1,19 +1,30 @@
import path from 'path'
import pkg from './package.json'

export default [
{
input: {
index: 'src/index.js',
matchers: 'src/matchers.js',
},
input: 'src/index.js',
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Maybe it's better to provide an array for an input? So rollup can share code between files, otherwise matchers are duplicated.

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I'm not terribly familiar with rollup. How can I specify an array for input, when each one should have a specific different output?

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@sheremet-va sheremet-va Aug 11, 2022 •
edited
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There is an example in Vitest repo: https://github.com/vitest-dev/vitest/blob/main/packages/vitest/rollup.config.js

You will need two entries, something like this:

export default [
	  {
	    input: entries,
	    output: {
	      dir: 'dist',
	      entryFileNames: '[name].mjs',
	      format: 'esm'
	    }
	  },
	  {
	    input: entries,
	    output: {
	      dir: 'dist',
	      entryFileNames: '[name].js',
	      format: 'cjs'
	    }
	  }
]

output: [
{
dir: path.dirname(pkg.exports['./matchers'].import),
file: pkg.exports['.'].import,
format: 'esm',
},
{
dir: path.dirname(pkg.exports['./matchers'].require),
file: pkg.exports['.'].require,
format: 'cjs',
},
],
external: id =>
!id.startsWith('\0') && !id.startsWith('.') && !id.startsWith('/'),
},
{
input: 'src/matchers.js',
output: [
{
file: pkg.exports['./matchers'].import,
format: 'esm',
},
{
file: pkg.exports['./matchers'].require,
format: 'cjs',
},
],
Expand Down