Use cosmiconfig for lint-staged config. Closes #64

src/generateTasks.js

@@ -2,7 +2,7 @@
 
 const minimatch = require('minimatch')
 
-module.exports = function generateTasks (config, filePaths) {
+module.exports = function generateTasks(config, filePaths) {
     const linters = config.linters !== undefined ? config.linters : config
     return Object.keys(linters)
         .map((pattern) => {

src/index.js

@@ -5,38 +5,57 @@
 
 process.env.FORCE_COLOR = true // Force colors for packages that depend on https://www.npmjs.com/package/supports-color
 
+const path = require('path')
 const sgf = require('staged-git-files')
 const appRoot = require('app-root-path')
 const Listr = require('listr')
-const path = require('path')
+const cosmiconfig = require('cosmiconfig')
 
-const config = require(appRoot.resolve('package.json')) // eslint-disable-line
+const packageJson = require(appRoot.resolve('package.json')) // eslint-disable-line
 const runScript = require('./runScript')
 const resolvePaths = require('./resolvePaths')
 const generateTasks = require('./generateTasks')
 
-// If git root is defined -> Set git root as sgf's cwd
-if (config['lint-staged']['git-root'] !== undefined) {
-    sgf.cwd = path.resolve(config['lint-staged']['git-root'])
-}
-
-sgf('ACM', (err, files) => {
-    if (err) {
-        console.error(err)
-    }
-
-    const tasks = generateTasks(config['lint-staged'], resolvePaths(files))
-        .map(task => ({
-            title: `Running tasks for ${ task.pattern }`,
-            task: () => (new Listr(runScript(task.commands, task.fileList, config)))
-        }))
-
-
-    if (tasks.length) {
-        new Listr(tasks).run().catch((error) => {
-            console.error(error)
-            process.exit(1)
-        })
-    }
+cosmiconfig(packageJson.name, {
+    rc: 'lintstaged'
 })
+    .then((result) => {
+        // result.config is the parsed configuration object
+        // result.filepath is the path to the config file that was found
+        const config = result.config
+
+        // If git-root is defined -> set git root as sgf's cwd
+        if ('git-root' in config) {
+            sgf.cwd = path.resolve(config['git-root'])
+        }
+
+        sgf('ACM', (err, files) => {
+            if (err) {
+                console.error(err)
+            }
+
+            const tasks = generateTasks(config, resolvePaths(files))
+                .map(task => ({
+                    title: `Running tasks for ${ task.pattern }`,
+                    task: () => (new Listr(runScript(task.commands, task.fileList, config)))
+                }))
+
+
+            if (tasks.length) {
+                new Listr(tasks).run().catch((error) => {
+                    console.error(error)
+                    process.exit(1)
+                })
+            }
+        })
+    })
+    .catch((parsingError) => {
+        // do something constructive
+        console.error(`Could not parse lint-staged config.
+Make sure you have created it. See ${ packageJson.homepage }.
+
+${ parsingError }
+`)
+        process.exit(1)
+    })