Use ES2015 template strings instead of string concatenation.

sass · Apr 6, 2018 · bbb6ada · bbb6ada
1 parent 606eab0
commit bbb6ada
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Showing 14 changed files with 46 additions and 41 deletions.
diff --git a/.eslintrc.json b/.eslintrc.json
@@ -4,6 +4,9 @@
   },
   "globals": {},
   "extends": "eslint:recommended",
+  "parserOptions": {
+    "ecmaVersion": 2015
+  },
   "rules": {
     "no-bitwise": 2,
     "camelcase": 0,
@@ -41,6 +44,8 @@
     "no-extra-semi": 2,
     "no-redeclare": 2,
     "block-scoped-var": 2,
-    "no-console": 0
+    "no-console": 0,
+    "no-useless-concat": 2,
+    "prefer-template": 2
   }
 }
diff --git a/bin/node-sass b/bin/node-sass
@@ -235,12 +235,12 @@ function getOptions(args, options) {
     var sourceMapIsDirectory = options.sourceMapOriginal.indexOf('.map', options.sourceMapOriginal.length - 4) === -1 && isDirectory(options.sourceMapOriginal);
 
     if (options.sourceMapOriginal === 'true') {
-      options.sourceMap = options.dest + '.map';
+      options.sourceMap = `${options.dest}.map`;
     } else if (!sourceMapIsDirectory) {
       options.sourceMap = path.resolve(options.sourceMapOriginal);
     } else if (sourceMapIsDirectory) {
       if (!options.directory) {
-        options.sourceMap = path.resolve(options.sourceMapOriginal, path.basename(options.dest) + '.map');
+        options.sourceMap = path.resolve(options.sourceMapOriginal, `${path.basename(options.dest)}.map`);
       } else {
         sassDir = path.resolve(options.directory);
         file = path.relative(sassDir, args[0]);

diff --git a/lib/errors.js b/lib/errors.js
@@ -18,7 +18,7 @@ function foundBinaries() {
 
 function foundBinariesList() {
   return sass.getInstalledBinaries().map(function(env) {
-    return '  - ' + sass.getHumanEnvironment(env);
+    return `  - ${sass.getHumanEnvironment(env)}`;
   }).join('\n');
 }
 
@@ -31,16 +31,16 @@ function missingBinaryFooter() {
 
 module.exports.unsupportedEnvironment = function() {
   return [
-    'Node Sass does not yet support your current environment: ' + humanEnvironment(),
+    `Node Sass does not yet support your current environment: ${humanEnvironment()}`,
     'For more information on which environments are supported please see:',
-    'https://github.com/sass/node-sass/releases/tag/v' + pkg.version
+    `https://github.com/sass/node-sass/releases/tag/v${pkg.version}`
   ].join('\n');
 };
 
 module.exports.missingBinary = function() {
   return [
-    'Missing binding ' + sass.getBinaryPath(),
-    'Node Sass could not find a binding for your current environment: ' + humanEnvironment(),
+    `Missing binding ${sass.getBinaryPath()}`,
+    `Node Sass could not find a binding for your current environment: ${humanEnvironment()}`,
     '',
     foundBinaries(),
     '',

diff --git a/lib/extensions.js b/lib/extensions.js
@@ -98,19 +98,19 @@ function getHumanEnvironment(env) {
     runtime = getHumanNodeVersion(parts[2]);
 
   if (parts.length !== 3) {
-    return 'Unknown environment (' + binding + ')';
+    return `Unknown environment (${binding})`;
   }
 
   if (!platform) {
-    platform = 'Unsupported platform (' + parts[0] + ')';
+    platform = `Unsupported platform (${parts[0]})`;
   }
 
   if (!arch) {
-    arch = 'Unsupported architecture (' + parts[1] + ')';
+    arch = `Unsupported architecture (${parts[1]})`;
   }
 
   if (!runtime) {
-    runtime = 'Unsupported runtime (' + parts[2] + ')';
+    runtime = `Unsupported runtime (${parts[2]})`;
   }
 
   return [
@@ -194,7 +194,7 @@ function getBinaryName() {
   } else {
     variant = getPlatformVariant();
     if (variant) {
-      platform += '_' + variant;
+      platform += `_${variant}`;
     }
 
     binaryName = [
@@ -242,7 +242,7 @@ function getBinaryUrl() {
              (pkg.nodeSassConfig && pkg.nodeSassConfig.binarySite) ||
              'https://github.com/sass/node-sass/releases/download';
 
-  return [site, 'v' + pkg.version, getBinaryName()].join('/');
+  return [site, `v${pkg.version}`, getBinaryName()].join('/');
 }
 
 /**

diff --git a/lib/index.js b/lib/index.js
@@ -51,7 +51,7 @@ function getSourceMap(options) {
   var sourceMap = options.sourceMap;
 
   if (sourceMap && typeof sourceMap !== 'string' && options.outFile) {
-    sourceMap = options.outFile + '.map';
+    sourceMap = `${options.outFile}.map`;
   }
 
   return sourceMap && typeof sourceMap === 'string' ? path.resolve(sourceMap) : null;
@@ -250,11 +250,11 @@ function tryCallback(callback, args) {
 function normalizeFunctionSignature(signature, callback) {
   if (!/^\*|@warn|@error|@debug|\w+\(.*\)$/.test(signature)) {
     if (!/\w+/.test(signature)) {
-      throw new Error('Invalid function signature format "' + signature + '"');
+      throw new Error(`Invalid function signature format "${signature}"`);
     }
 
     return {
-      signature: signature + '(...)',
+      signature: `${signature}(...)`,
       callback: function() {
         var args = Array.prototype.slice.call(arguments),
           list = args.shift(),

diff --git a/lib/render.js b/lib/render.js
@@ -76,7 +76,7 @@ module.exports = function(options, emitter) {
           return emitter.emit('error', chalk.red(err));
         }
 
-        emitter.emit('warn', chalk.green('Wrote CSS to ' + destination));
+        emitter.emit('warn', chalk.green(`Wrote CSS to ${  destination}`));
         emitter.emit('write', err, destination, result.css.toString());
         done();
       });
@@ -91,10 +91,10 @@ module.exports = function(options, emitter) {
         }
         fs.writeFile(sourceMap, result.map, function(err) {
           if (err) {
-            return emitter.emit('error', chalk.red('Error' + err));
+            return emitter.emit('error', chalk.red(`Error${err}`));
           }
 
-          emitter.emit('warn', chalk.green('Wrote Source Map to ' + sourceMap));
+          emitter.emit('warn', chalk.green(`Wrote Source Map to ${sourceMap}`));
           emitter.emit('write-source-map', err, sourceMap, result.map);
           done();
         });

diff --git a/test/api.js b/test/api.js
@@ -285,7 +285,7 @@ describe('api', function() {
             return sass.NULL;
           }
           done({
-            file: fixture('include-files/' + url + '.scss')
+            file: fixture(`include-files/${url}.scss`)
           });
         }
       }, function(err, data) {
@@ -734,7 +734,7 @@ describe('api', function() {
         functions: {
           'foo($a)': function(str) {
             str = str.getValue().replace(/['"]/g, '');
-            return new sass.types.String('"' + str + str + '"');
+            return new sass.types.String(`"${str}${str}"`);
           }
         }
       }, function(error, result) {
@@ -749,7 +749,7 @@ describe('api', function() {
         functions: {
           'foo($a)': function(str) {
             var unquoted = str.getValue().replace(/['"]/g, '');
-            str.setValue('"' + unquoted + unquoted + '"');
+            str.setValue(`"${unquoted}${unquoted}"`);
             return str;
           }
         }
@@ -1771,7 +1771,7 @@ describe('api', function() {
               list = new sass.types.List(t - f + 1);
 
             for (i = f; i <= t; i++) {
-              list.setValue(i - f, new sass.types.String('h' + i));
+              list.setValue(i - f, new sass.types.String(`h${i}`));
             }
 
             return list;

diff --git a/test/binding.js b/test/binding.js
@@ -15,7 +15,7 @@ describe('binding', function() {
       assert.throws(
         function() { binding(etx); },
         function(err) {
-          var re = new RegExp('Missing binding.*?\\' + path.sep + 'vendor\\' + path.sep);
+          var re = new RegExp(`Missing binding.*?\\${path.sep}vendor\\${path.sep}`);
           if ((err instanceof Error)) {
             return re.test(err);
           }

diff --git a/test/cli.js b/test/cli.js
@@ -235,7 +235,7 @@ describe('cli', function() {
 
       bin.stderr.setEncoding('utf8');
       bin.stderr.once('data', function(data) {
-        assert.strictEqual(data.trim(), '=> changed: ' + src);
+        assert.strictEqual(data.trim(), `=> changed: ${src}`);
         fs.unlinkSync(src);
         bin.kill();
         done();

diff --git a/test/errors.js b/test/errors.js
@@ -23,7 +23,7 @@ describe('binary errors', function() {
   }
 
   function getCurrentEnvironment() {
-    return getCurrentPlatform() + ' ' + getCurrentArchitecture();
+    return `${getCurrentPlatform()} ${getCurrentArchitecture()}`;
   }
 
   describe('for an unsupported environment', function() {
@@ -46,7 +46,7 @@ describe('binary errors', function() {
 
     it('documents the expected binary location', function() {
       var message = errors.missingBinary();
-      assert.ok(message.indexOf(path.sep + 'vendor' + path.sep) !== -1);
+      assert.ok(message.indexOf(`${path.sep}vendor${path.sep}`) !== -1);
     });
   });
 

diff --git a/test/fixtures/extras/my_custom_functions_string_conversion.js b/test/fixtures/extras/my_custom_functions_string_conversion.js
@@ -3,6 +3,6 @@ var sass = require('../../..');
 module.exports = {
   'foo($a)': function(str) {
     str = str.getValue().replace(/['"]/g, '');
-    return new sass.types.String('"' + str + str + '"');
+    return new sass.types.String(`"${str}${str}"`);
   }
 };
diff --git a/test/spec.js b/test/spec.js
@@ -18,7 +18,7 @@ var normalize = function(str) {
   return str.replace(/\s+/g, '');
 };
 
-var inputs = glob.sync(specPath + '/**/input.*');
+var inputs = glob.sync(`${specPath}/**/input.*`);
 
 var initialize = function(inputCss, options) {
   var testCase = {};
@@ -61,7 +61,7 @@ var runTest = function(inputCssPath, options) {
     if (test.todo || test.warningTodo) {
       this.skip('Test marked with TODO');
     } else if (test.only && test.only.indexOf(impl) === -1) {
-      this.skip('Tests marked for only: ' + test.only.join(', '));
+      this.skip(`Tests marked for only: ${test.only.join(', ')}`);
     } else if (version < test.startVersion) {
       this.skip('Tests marked for newer Sass versions only');
     } else if (version > test.endVersion) {
@@ -90,13 +90,13 @@ var runTest = function(inputCssPath, options) {
             assert.equal(
               error.formatted.toString().split('\n')[0],
               expectedError.toString().split('\n')[0],
-              'Should Error.\nOptions' + JSON.stringify(test.options));
+              `Should Error.\nOptions${JSON.stringify(test.options)}`);
           }
         } else if (expected) {
           assert.equal(
             normalize(result.css.toString()),
             expected,
-            'Should equal with options ' + JSON.stringify(test.options)
+            `Should equal with options ${JSON.stringify(test.options)}`
           );
         }
         done();
@@ -150,7 +150,7 @@ var executeSuite = function(suite, tests) {
           executeSuite(
             {
               name: prevSuite,
-              folder: suite.folder + '/' + prevSuite,
+              folder: `${suite.folder}/${prevSuite}`,
               tests: [],
               suites: [],
               options: Object.assign({}, suite.options),
@@ -166,7 +166,7 @@ var executeSuite = function(suite, tests) {
       executeSuite(
         {
           name: suiteName,
-          folder: suite.folder + '/' + suiteName,
+          folder: `${suite.folder}/${suiteName}`,
           tests: [],
           suites: [],
           options: Object.assign({}, suite.options),

diff --git a/test/types.js b/test/types.js
@@ -203,7 +203,7 @@ describe('sass.types', function() {
           assert.equal(error.message, 'Supplied value should be a number');
 
           return true;
-        }, 'argument was: ' + arg);
+        }, `argument was: ${arg}`);
       }
 
       assertJustOneArgument(function() { c.setR(); });
@@ -328,7 +328,7 @@ describe('sass.types', function() {
           assert.ok(error instanceof TypeError);
           assert.equal(error.message, 'Supplied value should be a boolean');
           return true;
-        }, 'setSeparator(' + arg + ')');
+        }, `setSeparator(${arg})`);
       });
     });
 
@@ -352,7 +352,7 @@ describe('sass.types', function() {
           assert.equal(error.message, 'Supplied index should be an integer');
 
           return true;
-        }, 'getValue(' + arg + ')');
+        }, `getValue(${arg})`);
       });
 
       assert.throws(function() {

diff --git a/test/useragent.js b/test/useragent.js
@@ -5,9 +5,9 @@ var assert = require('assert'),
 describe('util', function() {
   describe('useragent', function() {
     it('should look as we expect', function() {
-      var reNode = 'node/' + process.version;
-      var reSass = 'node-sass-installer/' + pkg.version;
-      var reUA = new RegExp('^' + reNode + ' ' + reSass + '$');
+      var reNode = `node/${process.version}`;
+      var reSass = `node-sass-installer/${pkg.version}`;
+      var reUA = new RegExp(`^${reNode} ${reSass}$`);
 
       assert.ok(reUA.test(ua()));
     });