feat: add string.prototype.bold

.circleci/config.yml

@@ -900,21 +900,26 @@ jobs:
           command: node ./test/polyfills/test-individual-feature.js
             String.prototype.blink
       - run:
-          name: Testing String.prototype.codePointAt
+          name: Testing String.prototype.bold
           no_output_timeout: 180m
           command: node ./test/polyfills/test-individual-feature.js
-            String.prototype.codePointAt
+            String.prototype.bold
       - run:
-          name: Testing String.prototype.endsWith
+          name: Testing String.prototype.codePointAt
           no_output_timeout: 180m
           command: node ./test/polyfills/test-individual-feature.js
-            String.prototype.endsWith
+            String.prototype.codePointAt
   test_13:
     docker:
       - image: circleci/node:10
     steps:
       - checkout
       - run: npm ci
+      - run:
+          name: Testing String.prototype.endsWith
+          no_output_timeout: 180m
+          command: node ./test/polyfills/test-individual-feature.js
+            String.prototype.endsWith
       - run:
           name: Testing String.prototype.fixed
           no_output_timeout: 180m
@@ -980,16 +985,16 @@ jobs:
           no_output_timeout: 180m
           command: node ./test/polyfills/test-individual-feature.js
             String.prototype.strike
-      - run:
-          name: Testing String.prototype.sub
-          no_output_timeout: 180m
-          command: node ./test/polyfills/test-individual-feature.js String.prototype.sub
   test_14:
     docker:
       - image: circleci/node:10
     steps:
       - checkout
       - run: npm ci
+      - run:
+          name: Testing String.prototype.sub
+          no_output_timeout: 180m
+          command: node ./test/polyfills/test-individual-feature.js String.prototype.sub
       - run:
           name: Testing String.prototype.sup
           no_output_timeout: 180m

polyfills/String/prototype/bold/config.toml

@@ -0,0 +1,26 @@
+dependencies = [
+  "_ESAbstract.CreateHTML",
+  "_ESAbstract.CreateMethodProperty",
+]
+spec = "https://www.ecma-international.org/ecma-262/6.0/#sec-string.prototype.bold"
+docs = "https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/bold"
+
+# Browsers which have always supported the feature are commented out.
+[browsers]
+# android = "*"
+bb = "*"
+# chrome = "*"
+# edge = "*"
+# edge_mob = "*"
+firefox = "< 4"
+# ios_chr = "*"
+# ios_saf = "*"
+ie = "*"
+ie_mob = "*"
+# opera = "*"
+op_mini = "*"
+# op_mob = "*"
+# safari = "*"
+firefox_mob = "< 4"
+# samsung_mob = "*"
+

polyfills/String/prototype/bold/detect.js

@@ -0,0 +1,4 @@
+'bold' in String.prototype && (function() {
+    var test = ''.bold('"');
+    return test == test.toLowerCase() && test.split('"').length <= 3;
+}())

polyfills/String/prototype/bold/polyfill.js

@@ -0,0 +1,9 @@
+/* globals CreateHTML, CreateMethodProperty */
+// B.2.3.5String.prototype.bold ( )
+// When the bold method is called with no arguments, the following steps are taken:
+CreateMethodProperty(String.prototype, 'bold', function bold() {
+    // 1. Let S be the this value.
+    var S = this;
+    // 2. Return ? CreateHTML(S, "b", "", "").
+    return CreateHTML(S, "b", "", "");
+});

polyfills/String/prototype/bold/tests.js

@@ -0,0 +1,42 @@
+/* eslint-env mocha */
+/* globals proclaim */
+
+var hasStrictMode = (function () {
+	return this === null;
+}).call(null);
+
+var ifHasStrictModeIt = hasStrictMode ? it : it.skip;
+
+it('is a function', function () {
+	proclaim.isFunction(String.prototype.bold);
+});
+
+it('has correct arity', function () {
+	proclaim.arity(String.prototype.bold, 0);
+});
+
+it('has correct name', function () {
+	proclaim.hasName(String.prototype.bold, 'bold');
+});
+
+it('is not enumerable', function () {
+	proclaim.isNotEnumerable(String.prototype, 'bold');
+});
+
+ifHasStrictModeIt('should throw a TypeError when called with undefined context', function () {
+    proclaim.throws(function () {
+        String.prototype.bold.call(undefined);
+    }, TypeError);
+});
+
+ifHasStrictModeIt('should throw a TypeError when called with null context', function () {
+    proclaim.throws(function () {
+        String.prototype.bold.call(null);
+    }, TypeError);
+});
+
+it('works on strings correctly', function() {
+	proclaim.deepEqual('_'.bold(), '<b>_</b>');
+	proclaim.deepEqual('<'.bold(), '<b><</b>');
+	proclaim.deepEqual(String.prototype.bold.call(1234), '<b>1234</b>');
+});