feat: add sync version of loadPackageJSON & isPackageListed

Author: sxzz

src/index.ts

@@ -1,10 +1,9 @@
 import type { PackageJson } from 'pkg-types'
 import fs from 'node:fs'
-import fsp from 'node:fs/promises'
 import { createRequire } from 'node:module'
 import { dirname, join, win32 } from 'node:path'
 import process from 'node:process'
-import { findUp } from 'find-up-simple'
+import { findUp as _findUp, findUpSync } from 'find-up-simple'
 import { interopDefault, resolvePathSync } from 'mlly'
 import { quansyncMacro } from 'quansync'
 
@@ -134,15 +133,22 @@ function searchPackageJSON(dir: string) {
   return packageJsonPath
 }
 
-export async function loadPackageJSON(cwd = process.cwd()): Promise<PackageJson | null> {
-  const path = await findUp('package.json', { cwd } as any)
+const findUp = quansyncMacro({
+  sync: findUpSync,
+  async: _findUp,
+})
+
+export const loadPackageJSON = quansyncMacro(async function (cwd = process.cwd()): Promise<PackageJson | null> {
+  const path = await findUp('package.json', { cwd })
   if (!path || !fs.existsSync(path))
     return null
-  return JSON.parse(await fsp.readFile(path, 'utf-8'))
-}
+  return JSON.parse(await readFile(path))
+})
+export const loadPackageJSONSync = loadPackageJSON.sync
 
-export async function isPackageListed(name: string, cwd?: string) {
+export const isPackageListed = quansyncMacro(async function (name: string, cwd?: string) {
   const pkg = await loadPackageJSON(cwd) || {}
 
   return (name in (pkg.dependencies || {})) || (name in (pkg.devDependencies || {}))
-}
+})
+export const isPackageListedSync = isPackageListed.sync

test/cjs.cjs

@@ -1,5 +1,5 @@
 const { join } = require('node:path')
-const { getPackageInfo, isPackageExists, resolveModule, importModule, loadPackageJSON, getPackageInfoSync } = require('../dist/index.cjs')
+const { getPackageInfo, isPackageExists, resolveModule, importModule, loadPackageJSON, getPackageInfoSync, loadPackageJSONSync, isPackageListed, isPackageListedSync } = require('../dist/index.cjs')
 const pkgJSON = require('../package.json')
 
 console.warn('===== CJS =====')
@@ -30,6 +30,10 @@ async function run() {
   expect(slash('foo\\bar')).to.eq('foo/bar')
 
   expect(await loadPackageJSON()).to.eql(pkgJSON)
+  expect(loadPackageJSONSync()).deep.eq(pkgJSON)
+
+  expect(await isPackageListed('eslint')).eq(true)
+  expect(isPackageListedSync('eslint')).eq(true)
 }
 
 run()

test/esm.mjs

@@ -2,7 +2,7 @@ import { promises as fs } from 'node:fs'
 import { join } from 'node:path'
 import { expect } from 'chai'
 // eslint-disable-next-line antfu/no-import-dist
-import { getPackageInfo, getPackageInfoSync, importModule, isPackageExists, loadPackageJSON, resolveModule } from '../dist/index.mjs'
+import { getPackageInfo, getPackageInfoSync, importModule, isPackageExists, isPackageListed, isPackageListedSync, loadPackageJSON, loadPackageJSONSync, resolveModule } from '../dist/index.mjs'
 
 console.warn('===== ESM =====')
 
@@ -29,7 +29,12 @@ async function run() {
   const { slash } = (await importModule('@antfu/utils'))
   expect(slash('foo\\bar')).to.eq('foo/bar')
 
-  expect(await loadPackageJSON()).to.eql(JSON.parse(await fs.readFile('./package.json'), 'utf-8'))
+  const json = await loadPackageJSON()
+  expect(json).to.eql(JSON.parse(await fs.readFile('./package.json', 'utf-8')))
+  expect(loadPackageJSONSync()).deep.eq(json)
+
+  expect(await isPackageListed('eslint')).eq(true)
+  expect(isPackageListedSync('eslint')).eq(true)
 }
 
 run()

test/source.test.ts

@@ -1,7 +1,7 @@
 import { promises as fs } from 'node:fs'
 import { join } from 'node:path'
 import { expect, it } from 'vitest'
-import { getPackageInfo, getPackageInfoSync, importModule, isPackageExists, loadPackageJSON, resolveModule } from '../src'
+import { getPackageInfo, getPackageInfoSync, importModule, isPackageExists, isPackageListed, isPackageListedSync, loadPackageJSON, loadPackageJSONSync, resolveModule } from '../src'
 
 it('test by source', async () => {
   expect(resolveModule('@antfu/utils')).to.contain(join('node_modules', '@antfu', 'utils'))
@@ -26,5 +26,10 @@ it('test by source', async () => {
   const { slash } = (await importModule('@antfu/utils'))
   expect(slash('foo\\bar')).to.eq('foo/bar')
 
-  expect(await loadPackageJSON()).to.eql(JSON.parse(await fs.readFile('./package.json', 'utf-8')))
+  const json = await loadPackageJSON()
+  expect(json).to.eql(JSON.parse(await fs.readFile('./package.json', 'utf-8')))
+  expect(loadPackageJSONSync()).deep.eq(json)
+
+  expect(await isPackageListed('eslint')).eq(true)
+  expect(isPackageListedSync('eslint')).eq(true)
 })