move to @npmcli/package-json

lib/is-server-package.js

@@ -1,7 +1,6 @@
-const util = require('util')
-const fs = require('fs')
-const { stat } = fs.promises || { stat: util.promisify(fs.stat) }
-const { resolve } = require('path')
+const { stat } = require('node:fs/promises')
+const { resolve } = require('node:path')
+
 module.exports = async path => {
   try {
     const st = await stat(resolve(path, 'server.js'))

lib/make-spawn-args.js

@@ -9,10 +9,10 @@ const makeSpawnArgs = options => {
     path,
     scriptShell = true,
     binPaths,
-    env = {},
+    env,
     stdio,
     cmd,
-    args = [],
+    args,
     stdioString,
   } = options
 

lib/package-envs.js

@@ -1,8 +1,14 @@
 // https://github.com/npm/rfcs/pull/183
 
-const envVal = val => Array.isArray(val) ? val.map(v => envVal(v)).join('\n\n')
-  : val === null || val === false ? ''
-  : String(val)
+const envVal = val => {
+  if (Array.isArray(val)) {
+    return val.map(v => envVal(v)).join('\n\n')
+  }
+  if (val === null || val === false) {
+    return ''
+  }
+  return String(val)
+}
 
 const packageEnvs = (env, vals, prefix) => {
   for (const [key, val] of Object.entries(vals)) {

lib/run-script-pkg.js

@@ -93,6 +93,8 @@ const runScriptPkg = async options => {
 
   return p.catch(er => {
     const { signal } = er
+    // coverage disabled because win32 never emits signals
+    /* istanbul ignore next */
     if (stdio === 'inherit' && signal) {
       // by the time we reach here, the child has already exited. we send the
       // signal back to ourselves again so that npm will exit with the same

lib/run-script.js

@@ -1,14 +1,15 @@
-const rpj = require('read-package-json-fast')
+const PackageJson = require('@npmcli/package-json')
 const runScriptPkg = require('./run-script-pkg.js')
 const validateOptions = require('./validate-options.js')
 const isServerPackage = require('./is-server-package.js')
 
-const runScript = options => {
+const runScript = async options => {
   validateOptions(options)
-  const { pkg, path } = options
-  return pkg ? runScriptPkg(options)
-    : rpj(path + '/package.json')
-      .then(readPackage => runScriptPkg({ ...options, pkg: readPackage }))
+  if (options.pkg) {
+    return runScriptPkg(options)
+  }
+  const { content: pkg } = await PackageJson.normalize(options.path)
+  return runScriptPkg({ ...options, pkg })
 }
 
 module.exports = Object.assign(runScript, { isServerPackage })

package.json

@@ -17,14 +17,14 @@
   "devDependencies": {
     "@npmcli/eslint-config": "^4.0.0",
     "@npmcli/template-oss": "4.21.3",
-    "require-inject": "^1.4.4",
+    "spawk": "^1.8.1",
     "tap": "^16.0.1"
   },
   "dependencies": {
     "@npmcli/node-gyp": "^3.0.0",
+    "@npmcli/package-json": "^5.0.0",
     "@npmcli/promise-spawn": "^7.0.0",
     "node-gyp": "^10.0.0",
-    "read-package-json-fast": "^3.0.0",
     "which": "^4.0.0"
   },
   "files": [