fix: Remove lodash dependency

index.js

@@ -1,10 +1,10 @@
+// @ts-check
 'use strict';
-let _ = require('lodash');
-let assert = require('assert');
+const assert = require('assert');
 
 module.exports = function IconfontWebpackPlugin (userOptions) {
   // Default options
-  const options = _.extend({
+  const options = Object.assign({
 
     // allows to prefix the font name to prevent collisions
     fontNamePrefix: '',

lib/icons-to-woff.js

@@ -1,3 +1,4 @@
+// @ts-check
 'use strict';
 const assert = require('assert');
 const path = require('path');
@@ -7,7 +8,7 @@ const ttf2woff = require('ttf2woff');
 const Readable = require('stream').Readable;
 
 /**
- * @param  {InputFileSystem} fs      An input file system
+ * @param  {typeof import("fs")} fs  An input file system
  * @param  {String[]} icons          Array of icon file paths
  * @param  {Object} options          SVG-Font options
  * @return {Promise<String>}         Base64 encoded font
@@ -37,18 +38,18 @@ module.exports = function createIconFont (fs, icons, options) {
         reject(err);
       });
     icons.forEach((filename, i) => {
-      const glyph = new Readable();
-      glyph._read = function noop () {};
-      glyph.metadata = {
-        unicode: [String.fromCodePoint('\ue000'.charCodeAt(0) + i)],
-        name: 'i' + i
-      };
+      const glyph = Object.assign(new Readable(), {
+        _read: function noop () {},
+        metadata: {
+          unicode: [String.fromCodePoint('\ue000'.charCodeAt(0) + i)],
+          name: 'i' + i
+        }
+      });
       fontStream.write(glyph);
-      fs.readFile(filename, function (err, result) {
+      fs.readFile(filename, 'utf-8', function (err, result) {
         if (err) {
           return reject(err);
         }
-        result = result.toString();
         const iconHeight = getSvgHeight(result, filename);
         if (!iconHeight) {
           return reject(new Error(`SVG font generation failed as icon "${filename}" does not have a height.`));
@@ -69,9 +70,9 @@ module.exports = function createIconFont (fs, icons, options) {
 /**
  * Reads the height of the svg
  *
- * @param  {String} svg      the svg content
- * @param  {String} filename the file name for error reporting
- * @return {Number}          height
+ * @param  {string} svg      the svg content
+ * @param  {string} filename the file name for error reporting
+ * @return {string}          height
  */
 function getSvgHeight (svg, filename) {
   const parseSvg = /<svg[^>]+height\s*=\s*["']?(\d+)\s*(pt|px|)["']?/i.exec(svg);

lib/postcss-plugin.js

@@ -1,13 +1,14 @@
+// @ts-check
 'use strict';
 const postcss = require('postcss');
 const path = require('path');
-const _ = require('lodash');
 const crypto = require('crypto');
 
 const urlRegexp = new RegExp('url\\s*\\((\\s*"([^"]+)"|\'([^\']+)\'|([^\'")]+))\\)');
 
 /**
  * Turn `url("demo.svg")` into `demo.svg`
+ * @param value {string}
  */
 function getUnresolvedIconPath (value) {
   const relativePathResult = urlRegexp.exec(value);
@@ -17,6 +18,12 @@ function getUnresolvedIconPath (value) {
   return relativePathResult[2] || relativePathResult[3] || relativePathResult[4];
 }
 
+/**
+ * Parses a `font-icon: url('./demo.svg')` expression
+ *
+ * @param value {string}
+ * @returns {{url: string, size?: string}}
+ */
 function parseFontIconValue (value) {
   const valueParts = value.trim().split(' ');
   const result = {};
@@ -35,21 +42,23 @@ function parseFontIconValue (value) {
 /**
  * Returns a promise with the result of all `icon-font:url(...)` svg paths of the given file
  *
- * @param fontName {string} The name of the font (font-family)
- * @param resolve {function} The webpack resolve helper
- * @param resolvedSvgs {string} The css loader path context to resolve relative urls
+ * @param postCssRoot {postcss.Root} The name of the font (font-family)
+ * @param webpackResolve {function} The webpack resolve helper
+ * @param context {string} The css loader path context to resolve relative urls
+ *
+ * @returns {Promise<{resolved: string[], unresolved: string[], relative: string[]}>}
  */
 function getSvgPaths (postCssRoot, webpackResolve, context) {
   // Gather all font-icon urls:
-  let unresolvedPaths = [];
+  const unresolvedPathsSet = new Set();
   postCssRoot.walkDecls((decl) => {
     if (decl.prop === 'font-icon' || decl.prop === 'font-icon-glyph') {
       const fontIcon = parseFontIconValue(decl.value);
-      unresolvedPaths.push(fontIcon.url);
+      unresolvedPathsSet.add(fontIcon.url);
     }
   });
   // Remove duplicates
-  unresolvedPaths = _.uniq(unresolvedPaths);
+  const unresolvedPaths = Array.from(unresolvedPathsSet);
   // Resolve the urls to the absolute url
   return Promise.all(unresolvedPaths.map((unresolvedPath) =>
     new Promise((resolve, reject) => {
@@ -124,7 +133,8 @@ function replaceIconFontDeclarations (fontName, postCssRoot, svgPaths) {
       }
       // Look up the index of the svg in the array to generate the unicode char position
       const iconCharCode = svgPaths.unresolved.indexOf(getUnresolvedIconPath(decl.value));
-      decl.value = '\'\\e' + _.padStart(iconCharCode.toString(16), 3, '0') + '\'';
+      const iconCharCodeHex = iconCharCode.toString(16);
+      decl.value = '\'\\e' + '0'.repeat(Math.max(0, 3 - iconCharCodeHex.length)) + iconCharCodeHex + '\'';
       // Turn `font-icon:` into `content:`
       decl.prop = 'content';
     }
@@ -135,8 +145,8 @@ function replaceIconFontDeclarations (fontName, postCssRoot, svgPaths) {
  * @param fontName {string} The name of the font (font-family)
  * @param postCssRoot {object} The postCss root object
  * @param useCssModules {boolean} wether the css loader is using css-modules or not
- * @param useCssModules {number} the enforced height of the svg font
- * @param resolvedRelativeSvgs {object} The svg path information
+ * @param enforcedSvgHeight {number} the enforced height of the svg font
+ * @param svgPaths {object} The svg path information
  */
 function addFontDeclaration (fontName, postCssRoot, useCssModules, enforcedSvgHeight, svgPaths) {
   // The options are passed as a query string so we use the relative svg paths to reduce the path length per file
@@ -174,7 +184,7 @@ module.exports = postcss.plugin('iconfont-webpack', config => function (root, re
       }
       // Generate a font icon name
       const md5sum = crypto.createHash('md5');
-      md5sum.update(JSON.stringify(_.values(svgPaths.relative)));
+      md5sum.update(JSON.stringify(svgPaths.relative));
       let fontName = md5sum.digest('hex').substr(0, 6);
       // Prefix the fontname with a letter as fonts with a leading number are not allowed
       fontName = config.fontNamePrefix + String.fromCharCode(fontName.charCodeAt(0) + 20) + fontName.substr(1);