first commit

app_vue/node_modules/is-file-esm/index.js

@@ -0,0 +1,104 @@
+'use strict'
+const { extname, isAbsolute, dirname } = require('path')
+const { access, accessSync, constants: { F_OK } } = require('fs')
+const { promisify, callbackify } = require('util')
+const readPkgUp = callbackify(require('read-pkg-up'))
+
+const isFileEsmPromise = promisify(isFileEsm)
+
+const tick = queueMicrotask
+
+const ERR_PATH_MUST_BE_STRING = 'is-esm: path must be a string'
+const ERR_PATH_MUST_BE_ABSOLUTE = 'is-esm: absolute paths only'
+const ERR_PATH_MUST_EXIST = 'is-esm: path does not exist'
+const ERR_PATH_MUST_HAVE_VALID_EXT = 'is-esm: path must be to a file with an extension of .js, .mjs or .cjs'
+
+function isFileEsm (path, cb) {
+  if (arguments.length <= 1) return isFileEsmPromise(path)
+  if (typeof path !== 'string') return void tick(() => cb(Error(ERR_PATH_MUST_BE_STRING)))
+  if (isAbsolute(path) === false) return void tick(() => cb(Error(ERR_PATH_MUST_BE_ABSOLUTE)))
+  const extMatch = /\.(c|m)?js/.exec(extname(path))
+  if (extMatch === null) return void tick(() => cb(Error(ERR_PATH_MUST_HAVE_VALID_EXT)))
+  access(path, F_OK, (err) => {
+    if (err) return void cb(Error(ERR_PATH_MUST_EXIST))
+    const [, extType = 'j'] = extMatch
+    const cwd = dirname(path)
+    readPkgUp({ cwd }, (err, pkg) => {
+      if (err) return void cb(err)
+      const { type } = pkg.packageJson
+      switch (type) {
+        case undefined: {
+          if (extType === 'j') return void cb(null, { esm: false, type, extType, path, pkgPath: pkg.path })
+          if (extType === 'm') return void cb(null, { esm: true, type, extType, path, pkgPath: pkg.path })
+          /* istanbul ignore else */
+          if (extType === 'c') return void cb(null, { esm: false, type, extType, path, pkgPath: pkg.path })
+          // unreachable
+        }
+        case 'commonjs': {
+          if (extType === 'j') return void cb(null, { esm: false, type, extType, path, pkgPath: pkg.path })
+          if (extType === 'm') return void cb(null, { esm: true, type, extType, path, pkgPath: pkg.path })
+          /* istanbul ignore else */
+          if (extType === 'c') return void cb(null, { esm: false, type, extType, path, pkgPath: pkg.path })
+          // unreachable
+        }
+        case 'module': {
+          if (extType === 'j') return void cb(null, { esm: true, type, extType, path, pkgPath: pkg.path })
+          if (extType === 'm') return void cb(null, { esm: true, type, extType, path, pkgPath: pkg.path })
+          /* istanbul ignore else */
+          if (extType === 'c') return void cb(null, { esm: false, type, extType, path, pkgPath: pkg.path })
+          // unreachable
+        }
+        default: return void cb(Object.assign(Error(`package.json type "${type}" not recognized`), { meta: { type, extType, path, pkgPath: pkg.path } }))
+      }
+    })
+  })
+}
+
+isFileEsm.sync = function isFileEsmSync (path) {
+  if (typeof path !== 'string') throw Error(ERR_PATH_MUST_BE_STRING)
+  if (isAbsolute(path) === false) throw Error(ERR_PATH_MUST_BE_ABSOLUTE)
+  const extMatch = /\.(c|m)?js/.exec(extname(path))
+  if (extMatch === null) throw Error(ERR_PATH_MUST_HAVE_VALID_EXT)
+  try {
+    accessSync(path, F_OK)
+  } catch (err) {
+    throw Error(ERR_PATH_MUST_EXIST)
+  }
+  const [, extType = 'j'] = extMatch
+  const cwd = dirname(path)
+  const pkg = readPkgUp.sync({ cwd })
+  const { type } = pkg.packageJson
+  switch (type) {
+    case undefined: {
+      if (extType === 'j') return { esm: false, type, extType, path, pkgPath: pkg.path }
+      if (extType === 'm') return { esm: true, type, extType, path, pkgPath: pkg.path }
+      /* istanbul ignore else */
+      if (extType === 'c') return { esm: false, type, extType, path, pkgPath: pkg.path }
+      // unreachable
+    }
+    case 'commonjs': {
+      if (extType === 'j') return { esm: false, type, extType, path, pkgPath: pkg.path }
+      if (extType === 'm') return { esm: true, type, extType, path, pkgPath: pkg.path }
+      /* istanbul ignore else */
+      if (extType === 'c') return { esm: false, type, extType, path, pkgPath: pkg.path }
+      // unreachable
+    }
+    case 'module': {
+      if (extType === 'j') return { esm: true, type, extType, path, pkgPath: pkg.path }
+      if (extType === 'm') return { esm: true, type, extType, path, pkgPath: pkg.path }
+      /* istanbul ignore else */
+      if (extType === 'c') return { esm: false, type, extType, path, pkgPath: pkg.path }
+      // unreachable
+    }
+    default: throw Object.assign(Error(`package.json type "${type}" not recognized`), { meta: { type, extType, path, pkgPath: pkg.path } })
+  }
+}
+
+isFileEsm.constants = {
+  ERR_PATH_MUST_BE_STRING,
+  ERR_PATH_MUST_BE_ABSOLUTE,
+  ERR_PATH_MUST_EXIST,
+  ERR_PATH_MUST_HAVE_VALID_EXT
+}
+
+module.exports = isFileEsm