fix: Make app package.json load error tolerant (#479)

package.json

@@ -25,7 +25,6 @@
     "test:watch": "jest --watch"
   },
   "dependencies": {
-    "app-root-path": "^2.0.1",
     "chalk": "^2.3.1",
     "commander": "^2.14.1",
     "cosmiconfig": "^5.0.2",

src/findBin.js

@@ -1,14 +1,22 @@
 'use strict'
 
 const parse = require('string-argv')
-const appRoot = require('app-root-path')
 const npmWhich = require('npm-which')(process.cwd())
 const checkPkgScripts = require('./checkPkgScripts')
 
-// Find and load the package.json at the root of the project.
-const pkg = require(appRoot.resolve('package.json')) // eslint-disable-line import/no-dynamic-require
 const debug = require('debug')('lint-staged:find-bin')
 
+// Find and load the package.json at the root of the project.
+let pkg
+try {
+  // eslint-disable-next-line import/no-dynamic-require, global-require
+  pkg = require(`${process.cwd()}/package.json`)
+  debug('Loaded package.json using `process.cwd()`')
+} catch (ignore) {
+  debug('Could not load package.json using `process.cwd()`')
+  pkg = {}
+}
+
 const cache = new Map()
 
 module.exports = function findBin(cmd) {

yarn.lock

@@ -124,10 +124,6 @@ anymatch@^2.0.0:
     micromatch "^3.1.4"
     normalize-path "^2.1.1"
 
-app-root-path@^2.0.1:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/app-root-path/-/app-root-path-2.1.0.tgz#98bf6599327ecea199309866e8140368fd2e646a"
-
 append-transform@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/append-transform/-/append-transform-1.0.0.tgz#046a52ae582a228bd72f58acfbe2967c678759ab"