refactor start

home/ags/node_modules/eslint-plugin-n/lib/util/get-package-json.js

@@ -1,75 +0,0 @@
-/**
- * @author Toru Nagashima
- * See LICENSE file in root directory for full license.
- */
-"use strict"
-
-const fs = require("fs")
-const path = require("path")
-const Cache = require("./cache")
-
-const cache = new Cache()
-
-/**
- * Reads the `package.json` data in a given path.
- *
- * Don't cache the data.
- *
- * @param {string} dir - The path to a directory to read.
- * @returns {object|null} The read `package.json` data, or null.
- */
-function readPackageJson(dir) {
-    const filePath = path.join(dir, "package.json")
-    try {
-        const text = fs.readFileSync(filePath, "utf8")
-        const data = JSON.parse(text)
-
-        if (typeof data === "object" && data !== null) {
-            data.filePath = filePath
-            return data
-        }
-    } catch (_err) {
-        // do nothing.
-    }
-
-    return null
-}
-
-/**
- * Gets a `package.json` data.
- * The data is cached if found, then it's used after.
- *
- * @param {string} [startPath] - A file path to lookup.
- * @returns {object|null} A found `package.json` data or `null`.
- *      This object have additional property `filePath`.
- */
-module.exports = function getPackageJson(startPath = "a.js") {
-    const startDir = path.dirname(path.resolve(startPath))
-    let dir = startDir
-    let prevDir = ""
-    let data = null
-
-    do {
-        data = cache.get(dir)
-        if (data) {
-            if (dir !== startDir) {
-                cache.set(startDir, data)
-            }
-            return data
-        }
-
-        data = readPackageJson(dir)
-        if (data) {
-            cache.set(dir, data)
-            cache.set(startDir, data)
-            return data
-        }
-
-        // Go to next.
-        prevDir = dir
-        dir = path.resolve(dir, "..")
-    } while (dir !== prevDir)
-
-    cache.set(startDir, null)
-    return null
-}