Replace lodash with native methods and use its packages directly.

Dropped:

* `_.forEach`
* `_.map`
* `_.reduce`

cli.js

@@ -9,7 +9,8 @@ const chalk = require('chalk');
 const indentString = require('indent-string');
 const stdin = require('get-stdin');
 const css = require('css');
-const _ = require('lodash');
+const escapeRegExp = require('lodash.escaperegexp');
+const defaults = require('lodash.defaults');
 const inlineCritical = require('.');
 
 let ok;
@@ -68,49 +69,45 @@ const cli = meow(help, {
 });
 
 // Cleanup cli flags
-cli.flags = _.reduce(
-  cli.flags,
-  (res, val, key) => {
-    if (key.length <= 1) {
-      return res;
-    }
+cli.flags = Object.entries(cli.flags).reduce((res, [key, val]) => {
+  if (key.length <= 1) {
+    return res;
+  }
 
-    switch (key) {
-      case 'css':
-      case 'html':
-        try {
-          res[key] = read(val);
-        } catch (_) {}
+  switch (key) {
+    case 'css':
+    case 'html':
+      try {
+        res[key] = read(val);
+      } catch (_) {}
 
-        break;
-      case 'base':
-        res.basePath = val;
-        break;
-      case 'ignore':
-        if (_.isString(val) || _.isRegExp(val)) {
-          val = [val];
+      break;
+    case 'base':
+      res.basePath = val;
+      break;
+    case 'ignore':
+      if (!Array.isArray(val)) {
+        val = [val];
+      }
+
+      res.ignore = (val || []).map(ignore => {
+        // Check regex
+        const match = ignore.match(/^\/(.*)\/([igmy]+)?$/);
+
+        if (match) {
+          return new RegExp(escapeRegExp(match[1]), match[2]);
         }
 
-        res.ignore = _.map(val || [], ignore => {
-          // Check regex
-          const match = ignore.match(/^\/(.*)\/([igmy]+)?$/);
+        return ignore;
+      });
+      break;
+    default:
+      res[key] = val;
+      break;
+  }
 
-          if (match) {
-            return new RegExp(_.escapeRegExp(match[1]), match[2]);
-          }
-
-          return ignore;
-        });
-        break;
-      default:
-        res[key] = val;
-        break;
-    }
-
-    return res;
-  },
-  {}
-);
+  return res;
+}, {});
 
 function processError(err) {
   process.stderr.write(chalk.red(indentString(`Error: ${err.message || err}`, 2)));
@@ -128,7 +125,7 @@ function read(file) {
 }
 
 function run(data) {
-  const opts = _.defaults(cli.flags, {basePath: process.cwd()});
+  const opts = defaults(cli.flags, {basePath: process.cwd()});
   ok = true;
 
   if (data) {
@@ -141,7 +138,7 @@ function run(data) {
     }
   }
 
-  _.forEach(cli.input, file => {
+  (cli.input || []).forEach(file => {
     const tmp = read(file);
     try {
       css.parse(tmp);

index.js

@@ -13,8 +13,8 @@
 
 const fs = require('fs');
 const path = require('path');
-const isString = require('lodash/isString');
-const isRegExp = require('lodash/isRegExp');
+const isString = require('lodash.isstring');
+const isRegExp = require('lodash.isregexp');
 const reaver = require('reaver');
 const slash = require('slash');
 

package-lock.json

@@ -4966,12 +4966,22 @@
       "integrity": "sha1-soqmKIorn8ZRA1x3EfZathkDMaY=",
       "dev": true
     },
+    "lodash.defaults": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/lodash.defaults/-/lodash.defaults-4.2.0.tgz",
+      "integrity": "sha1-0JF4cW/+pN3p5ft7N/bwgCJ0WAw="
+    },
     "lodash.defaultsdeep": {
       "version": "4.6.1",
       "resolved": "https://registry.npmjs.org/lodash.defaultsdeep/-/lodash.defaultsdeep-4.6.1.tgz",
       "integrity": "sha512-3j8wdDzYuWO3lM3Reg03MuQR957t287Rpcxp1njpEa8oDrikb+FwGdW3n+FELh/A6qib6yPit0j/pv9G/yeAqA==",
       "dev": true
     },
+    "lodash.escaperegexp": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/lodash.escaperegexp/-/lodash.escaperegexp-4.1.2.tgz",
+      "integrity": "sha1-ZHYsSGGAglGKw99Mz11YhtriA0c="
+    },
     "lodash.get": {
       "version": "4.4.2",
       "resolved": "https://registry.npmjs.org/lodash.get/-/lodash.get-4.4.2.tgz",
@@ -4984,6 +4994,16 @@
       "integrity": "sha1-QVxEePK8wwEgwizhDtMib30+GOA=",
       "dev": true
     },
+    "lodash.isregexp": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/lodash.isregexp/-/lodash.isregexp-4.0.1.tgz",
+      "integrity": "sha1-4T5kezDNVZdSoEzZEghvr32hwws="
+    },
+    "lodash.isstring": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/lodash.isstring/-/lodash.isstring-4.0.1.tgz",
+      "integrity": "sha1-1SfftUVuynzJu5XV2ur4i6VKVFE="
+    },
     "lodash.kebabcase": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/lodash.kebabcase/-/lodash.kebabcase-4.1.1.tgz",

package.json

@@ -39,7 +39,10 @@
     "get-stdin": "^7.0.0",
     "indent-string": "^4.0.0",
     "jsdom": "^15.2.0",
-    "lodash": "^4.17.15",
+    "lodash.defaults": "^4.2.0",
+    "lodash.escaperegexp": "^4.1.2",
+    "lodash.isregexp": "^4.0.1",
+    "lodash.isstring": "^4.0.1",
     "meow": "^5.0.0",
     "normalize-newline": "^3.0.0",
     "postcss": "^7.0.18",

src/dom.js

@@ -5,7 +5,6 @@ const path = require('path');
 const {JSDOM} = require('jsdom');
 const resolve = require('resolve');
 const detectIndent = require('detect-indent');
-const flatten = require('lodash/flatten');
 const UglifyJS = require('uglify-js');
 
 /**
@@ -21,6 +20,15 @@ function getScript() {
   return UglifyJS.minify(loadCSS).code.trim();
 }
 
+/**
+ * Flattens an array
+ * @param {array} arr Input Array
+ * @returns {array} Flattened Array
+ */
+function flatten(arr) {
+  return arr.reduce((a, b) => a.concat(b), []);
+}
+
 /**
  * Get all subsctings of of the passed tags
  * Does not work with self closing tags