@pnpm/meta-updater
Keeps meta files up-to-date in a monorepo
Installation
<pnpm|yarn|npm> add @pnpm/meta-updater
Usage
Create a JavaScript file at .meta-updater/main.mjs
that contains the updater functions.
Example 1
The following .meta-updater/main.mjs
defines updaters for package.json
and tsconfig.json
files:
export default (workspaceDir) => {
return {
'package.json': (manifest, dir) => {
return {
...manifest,
author: 'Foo Bar',
}
},
'tsconfig.json': (tsConfig, dir) => {
return {
...tsConfig,
compilerOptions: {
outDir: 'lib',
rootDir: 'src',
},
}
},
}
}
Example 2
The following .meta-updater/main.mjs
defines format #ignore
and updaters for .gitignore
and .eslintrc
using explicit format specifier.
import * as fs from 'fs/promises'
import { createFormat, createUpdateOptions } from '@pnpm/meta-updater'
export const eslintrc = {}
export const tsconfig = { compilerOptions: { target: 'esnext' } }
const ignoreFormat = createFormat({
async read({ resolvedPath }) {
return (await fs.readFile(resolvedPath, 'utf8')).split('\n')
},
update(actual, updater, options) {
return updater(actual, options)
},
equal(expected, actual) {
return R.equals(expected, actual)
},
async write(expected, { resolvedPath }) {
const unique = (array) => Array.from(new Set() < T[number] > array).sort()
await fs.writeFile(resolvedPath, unique(expected).join('\n'), 'utf8')
},
})
export default async (_workspaceDir) => {
return createUpdateOptions({
files: {
'tsconfig.json': (actual, _options) => actual ?? tsconfig,
'.eslintrc [.json]': (actual) => actual ?? eslintrc,
'.prettierignore [#ignore]': (actual) => actual ?? ['node_modules'],
},
formats: {
'#ignore': ignoreFormat,
},
})
}
See more examples at src/examples/
To perform the update on the affected config files, run pnpm meta-updater
.
To check that all meta files are up-to-date, run pnpm meta-updater --test
. It is recommended to always check the meta files before running the tests, so add it to your test command:
{
"test": "meta-updater --test && jest"
}
API
Updater Function: (config | null, dir, manifest) => Promise<config | null>
The updater function recieves the config object or null (if the config file does not exist). The updater function returns the config object that should be saved. If the updater function returns null, the config should be removed.
License
MIT © Zoltan Kochan