Merge changes from LLK/develop

package-lock.json

@@ -1089,9 +1089,9 @@
       }
     },
     "@vernier/godirect": {
-      "version": "1.4.1",
+      "version": "1.5.0",
-      "resolved": "https://registry.npmjs.org/@vernier/godirect/-/godirect-1.4.1.tgz",
+      "resolved": "https://registry.npmjs.org/@vernier/godirect/-/godirect-1.5.0.tgz",
-      "integrity": "sha512-5RaBF0UOLJR85UWlPTUv4c7aE3OW3wtaWd6MFEEhVrHTfUuEJPq7444U8tC4hKZnrNyppV/bCN9JtSmN0OlHkg=="
+      "integrity": "sha512-vMS0fQubI3WSSLg1Ry3aey/qWCl9XoCsFzgwOWYkeJs45YxjPel+42pLh5pO7uP6oF47sjZUKx8kGOoTiiiirA=="
     },
     "@webassemblyjs/ast": {
       "version": "1.5.13",
@@ -1673,14 +1673,6 @@
       "integrity": "sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c=",
       "dev": true
     },
-    "async": {
-      "version": "2.6.0",
-      "resolved": "https://registry.npmjs.org/async/-/async-2.6.0.tgz",
-      "integrity": "sha512-xAfGg1/NTLBBKlHFmnd7PlmUW9KhVQIUuSrYem9xzFUZy13ScvtyGGejaae9iAVRiRq9+Cx7DPFaAAhCpyxyPw==",
-      "requires": {
-        "lodash": "^4.14.0"
-      }
-    },
     "async-each": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.1.tgz",
@@ -3228,7 +3220,8 @@
     "crc32": {
       "version": "0.2.2",
       "resolved": "https://registry.npmjs.org/crc32/-/crc32-0.2.2.tgz",
-      "integrity": "sha1-etIg1v/c0Rn5/BJ6d3LKzqOQpLo="
+      "integrity": "sha1-etIg1v/c0Rn5/BJ6d3LKzqOQpLo=",
+      "dev": true
     },
     "create-ecdh": {
       "version": "4.0.3",
@@ -3440,11 +3433,6 @@
         }
       }
     },
-    "deflate-js": {
-      "version": "0.2.3",
-      "resolved": "https://registry.npmjs.org/deflate-js/-/deflate-js-0.2.3.tgz",
-      "integrity": "sha1-+Fq7WOvFFRowYUdHPVfD5PfkQms="
-    },
     "del": {
       "version": "2.2.2",
       "resolved": "https://registry.npmjs.org/del/-/del-2.2.2.tgz",
@@ -6271,15 +6259,6 @@
       "integrity": "sha512-qBr4OuELkhPenW6goKVXiv47US3clb3/IbuWF9KNKEijAy9oeHxU9IgzjvJhHkUzhaj7rOUD7+YGWqUjLp5oSA==",
       "dev": true
     },
-    "gzip-js": {
-      "version": "0.3.2",
-      "resolved": "https://registry.npmjs.org/gzip-js/-/gzip-js-0.3.2.tgz",
-      "integrity": "sha1-IxF+/usozzhSSN7/Df+tiUg22Ws=",
-      "requires": {
-        "crc32": ">= 0.2.2",
-        "deflate-js": ">= 0.2.2"
-      }
-    },
     "handle-thing": {
       "version": "1.2.5",
       "resolved": "https://registry.npmjs.org/handle-thing/-/handle-thing-1.2.5.tgz",
@@ -7460,7 +7439,8 @@
     "lodash": {
       "version": "4.17.4",
       "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
-      "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
+      "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=",
+      "dev": true
     },
     "lodash._baseassign": {
       "version": "3.2.0",
@@ -12149,9 +12129,9 @@
       }
     },
     "scratch-blocks": {
-      "version": "0.1.0-prerelease.1551865183",
+      "version": "0.1.0-prerelease.1552662801",
-      "resolved": "https://registry.npmjs.org/scratch-blocks/-/scratch-blocks-0.1.0-prerelease.1551865183.tgz",
+      "resolved": "https://registry.npmjs.org/scratch-blocks/-/scratch-blocks-0.1.0-prerelease.1552662801.tgz",
-      "integrity": "sha512-jb4J40y60HyRCryvFSwW9zXsQwaM2DzP5i9KQkJem9RP8gXOZrr56rXHF9VOQ9jQ06fulG65NMTkCL+BU5ulnw==",
+      "integrity": "sha512-OPTvPvzsV0ryhOGNfV9F0dopsuohIyu0SglzQw7jmEf6eeQ3yW0hOGqUeU2HR3c9F/uS3Uy7PispXhYCAZo/tg==",
       "dev": true,
       "requires": {
         "exports-loader": "0.6.3",
@@ -12171,14 +12151,13 @@
       }
     },
     "scratch-parser": {
-      "version": "4.3.5",
+      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/scratch-parser/-/scratch-parser-4.3.5.tgz",
+      "resolved": "https://registry.npmjs.org/scratch-parser/-/scratch-parser-5.0.0.tgz",
-      "integrity": "sha512-jOHrR9evVnRxnIc7W+1m7S2E5yDyUCbh8xvPueT10mo7AfLprE9lRKAtc6yF3Gxj0Rm/jhyiGBn8crAPc/F4Vg==",
+      "integrity": "sha512-7kjxoxivLgYYvmAJVLOOWnca4CigwuCpgjy9+6UuxOMgSZKO1xqIjxIADupabmh1ZLZZDVe45DBM/CQTdtVDkw==",
       "requires": {
         "ajv": "6.3.0",
-        "async": "2.6.0",
+        "jszip": "3.1.5",
-        "gzip-js": "0.3.2",
+        "pify": "4.0.1"
-        "jszip": "3.1.5"
       },
       "dependencies": {
         "ajv": {
@@ -12190,6 +12169,11 @@
             "fast-json-stable-stringify": "^2.0.0",
             "json-schema-traverse": "^0.3.0"
           }
+        },
+        "pify": {
+          "version": "4.0.1",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-4.0.1.tgz",
+          "integrity": "sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g=="
         }
       }
     },
@@ -12248,13 +12232,6 @@
         "js-md5": "0.7.3",
         "minilog": "3.1.0",
         "text-encoding": "^0.7.0"
-      },
-      "dependencies": {
-        "text-encoding": {
-          "version": "0.7.0",
-          "resolved": "https://registry.npmjs.org/text-encoding/-/text-encoding-0.7.0.tgz",
-          "integrity": "sha512-oJQ3f1hrOnbRLOcwKz0Liq2IcrvDeZRHXhd9RgLrsT+DjWY/nty1Hi7v3dtkaEYbPYe0mUoOfzRrMwfXXwgPUA=="
-        }
       }
     },
     "scratch-storage": {
@@ -12276,19 +12253,13 @@
           "resolved": "https://registry.npmjs.org/js-md5/-/js-md5-0.7.3.tgz",
           "integrity": "sha512-ZC41vPSTLKGwIRjqDh8DfXoCrdQIyBgspJVPXHBGu4nZlAEvG3nf+jO9avM9RmLiGakg7vz974ms99nEV0tmTQ==",
           "dev": true
-        },
-        "text-encoding": {
-          "version": "0.7.0",
-          "resolved": "https://registry.npmjs.org/text-encoding/-/text-encoding-0.7.0.tgz",
-          "integrity": "sha512-oJQ3f1hrOnbRLOcwKz0Liq2IcrvDeZRHXhd9RgLrsT+DjWY/nty1Hi7v3dtkaEYbPYe0mUoOfzRrMwfXXwgPUA==",
-          "dev": true
         }
       }
     },
     "scratch-svg-renderer": {
-      "version": "0.2.0-prerelease.20190125192231",
+      "version": "0.2.0-prerelease.20190304180800",
-      "resolved": "https://registry.npmjs.org/scratch-svg-renderer/-/scratch-svg-renderer-0.2.0-prerelease.20190125192231.tgz",
+      "resolved": "https://registry.npmjs.org/scratch-svg-renderer/-/scratch-svg-renderer-0.2.0-prerelease.20190304180800.tgz",
-      "integrity": "sha512-8cOLJsN2zDT2FLcB3wLxew3tzO6fkI25uiaW0c6juQl5zJseANIvP4tc31gaeUG4xSQa1zfk/PpXKPQDGa66Tw==",
+      "integrity": "sha512-fFePDGb65g1YaN/fkBl6hfgvjxr3hE9TMWuAYU1MeK5vVeZA+HPslUyMIvsEvLV5nCqs+0Jv7ievnP39ihhHLQ==",
       "dev": true,
       "requires": {
         "base64-js": "1.2.1",
@@ -13518,9 +13489,9 @@
       "dev": true
     },
     "text-encoding": {
-      "version": "0.6.4",
+      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/text-encoding/-/text-encoding-0.6.4.tgz",
+      "resolved": "https://registry.npmjs.org/text-encoding/-/text-encoding-0.7.0.tgz",
-      "integrity": "sha1-45mpgiV6J22uQou5KEXLcb3CbRk="
+      "integrity": "sha512-oJQ3f1hrOnbRLOcwKz0Liq2IcrvDeZRHXhd9RgLrsT+DjWY/nty1Hi7v3dtkaEYbPYe0mUoOfzRrMwfXXwgPUA=="
     },
     "text-table": {
       "version": "0.2.0",

package.json

@@ -29,7 +29,7 @@
     "version": "json -f package.json -I -e \"this.repository.sha = '$(git log -n1 --pretty=format:%H)'\""
   },
   "dependencies": {
-    "@vernier/godirect": "1.4.1",
+    "@vernier/godirect": "1.5.0",
     "arraybuffer-loader": "^1.0.6",
     "atob": "2.1.2",
     "btoa": "1.2.1",
@@ -43,11 +43,11 @@
     "jszip": "^3.1.5",
     "minilog": "3.1.0",
     "nets": "3.2.0",
-    "scratch-parser": "4.3.5",
+    "scratch-parser": "5.0.0",
     "scratch-sb1-converter": "0.2.7",
     "scratch-translate-extension-languages": "0.0.20181205140428",
     "socket.io-client": "2.0.4",
-    "text-encoding": "0.6.4",
+    "text-encoding": "0.7.0",
     "worker-loader": "^1.1.1"
   },
   "devDependencies": {

src/blocks/scratch3_looks.js

@@ -76,6 +76,14 @@ class Scratch3LooksBlocks {
         return {min: 0, max: 100};
     }
 
+    /**
+     * Limit for brightness effect
+     * @const {object}
+     */
+    static get EFFECT_BRIGHTNESS_LIMIT (){
+        return {min: -100, max: 100};
+    }
+
     /**
      * @param {Target} target - collect bubble state for this target. Probably, but not necessarily, a RenderedTarget.
      * @returns {BubbleState} the mutable bubble state associated with that target. This will be created if necessary.
@@ -484,27 +492,36 @@ class Scratch3LooksBlocks {
         );
     }
 
+    clampEffect (effect, value) {
+        let clampedValue = value;
+        switch (effect) {
+        case 'ghost':
+            clampedValue = MathUtil.clamp(value,
+                Scratch3LooksBlocks.EFFECT_GHOST_LIMIT.min,
+                Scratch3LooksBlocks.EFFECT_GHOST_LIMIT.max);
+            break;
+        case 'brightness':
+            clampedValue = MathUtil.clamp(value,
+                Scratch3LooksBlocks.EFFECT_BRIGHTNESS_LIMIT.min,
+                Scratch3LooksBlocks.EFFECT_BRIGHTNESS_LIMIT.max);
+            break;
+        }
+        return clampedValue;
+    }
+
     changeEffect (args, util) {
         const effect = Cast.toString(args.EFFECT).toLowerCase();
         const change = Cast.toNumber(args.CHANGE);
         if (!util.target.effects.hasOwnProperty(effect)) return;
         let newValue = change + util.target.effects[effect];
-        if (effect === 'ghost') {
+        newValue = this.clampEffect(effect, newValue);
-            newValue = MathUtil.clamp(newValue,
-                Scratch3LooksBlocks.EFFECT_GHOST_LIMIT.min,
-                Scratch3LooksBlocks.EFFECT_GHOST_LIMIT.max);
-        }
         util.target.setEffect(effect, newValue);
     }
 
     setEffect (args, util) {
         const effect = Cast.toString(args.EFFECT).toLowerCase();
         let value = Cast.toNumber(args.VALUE);
-        if (effect === 'ghost') {
+        value = this.clampEffect(effect, value);
-            value = MathUtil.clamp(value,
-                Scratch3LooksBlocks.EFFECT_GHOST_LIMIT.min,
-                Scratch3LooksBlocks.EFFECT_GHOST_LIMIT.max);
-        }
         util.target.setEffect(effect, value);
     }
 

src/blocks/scratch3_motion.js

@@ -87,6 +87,7 @@ class Scratch3MotionBlocks {
             targetX = Math.round(stageWidth * (Math.random() - 0.5));
             targetY = Math.round(stageHeight * (Math.random() - 0.5));
         } else {
+            targetName = Cast.toString(targetName);
             const goToTarget = this.runtime.getSpriteTargetByName(targetName);
             if (!goToTarget) return;
             targetX = goToTarget.x;
@@ -127,6 +128,7 @@ class Scratch3MotionBlocks {
             util.target.setDirection(Math.round(Math.random() * 360) - 180);
             return;
         } else {
+            args.TOWARDS = Cast.toString(args.TOWARDS);
             const pointTarget = this.runtime.getSpriteTargetByName(args.TOWARDS);
             if (!pointTarget) return;
             targetX = pointTarget.x;

src/blocks/scratch3_sensing.js

@@ -191,6 +191,7 @@ class Scratch3SensingBlocks {
             targetX = util.ioQuery('mouse', 'getScratchX');
             targetY = util.ioQuery('mouse', 'getScratchY');
         } else {
+            args.DISTANCETOMENU = Cast.toString(args.DISTANCETOMENU);
             const distTarget = this.runtime.getSpriteTargetByName(
                 args.DISTANCETOMENU
             );
@@ -282,6 +283,7 @@ class Scratch3SensingBlocks {
         if (args.OBJECT === '_stage_') {
             attrTarget = this.runtime.getTargetForStage();
         } else {
+            args.OBJECT = Cast.toString(args.OBJECT);
             attrTarget = this.runtime.getSpriteTargetByName(args.OBJECT);
         }
 

src/engine/blocks.js

@@ -735,6 +735,12 @@ class Blocks {
                 if (this._blocks[e.newParent].inputs.hasOwnProperty(e.newInput)) {
                     oldShadow = this._blocks[e.newParent].inputs[e.newInput].shadow;
                 }
+
+                // If the block being attached is itself a shadow, make sure to set
+                // both block and shadow to that blocks ID. This happens when adding
+                // inputs to a custom procedure.
+                if (this._blocks[e.id].shadow) oldShadow = e.id;
+
                 this._blocks[e.newParent].inputs[e.newInput] = {
                     name: e.newInput,
                     block: e.id,

src/extension-support/extension-manager.js

@@ -7,34 +7,22 @@ const BlockType = require('./block-type');
 // These extensions are currently built into the VM repository but should not be loaded at startup.
 // TODO: move these out into a separate repository?
 // TODO: change extension spec so that library info, including extension ID, can be collected through static methods
-const Scratch3PenBlocks = require('../extensions/scratch3_pen');
-const Scratch3WeDo2Blocks = require('../extensions/scratch3_wedo2');
-const Scratch3MusicBlocks = require('../extensions/scratch3_music');
-const Scratch3MicroBitBlocks = require('../extensions/scratch3_microbit');
-const Scratch3Text2SpeechBlocks = require('../extensions/scratch3_text2speech');
-const Scratch3TranslateBlocks = require('../extensions/scratch3_translate');
-const Scratch3VideoSensingBlocks = require('../extensions/scratch3_video_sensing');
-const Scratch3Speech2TextBlocks = require('../extensions/scratch3_speech2text');
-const Scratch3Ev3Blocks = require('../extensions/scratch3_ev3');
-const Scratch3MakeyMakeyBlocks = require('../extensions/scratch3_makeymakey');
-const Scratch3BoostBlocks = require('../extensions/scratch3_boost');
-// todo: only load this extension once we have a compatible way to load its
-// Vernier module dependency.
-// const Scratch3GdxForBlocks = require('../extensions/scratch3_gdx_for');
 
 const builtinExtensions = {
-    pen: Scratch3PenBlocks,
+    pen: () => require('../extensions/scratch3_pen'),
-    wedo2: Scratch3WeDo2Blocks,
+    wedo2: () => require('../extensions/scratch3_wedo2'),
-    music: Scratch3MusicBlocks,
+    music: () => require('../extensions/scratch3_music'),
-    microbit: Scratch3MicroBitBlocks,
+    microbit: () => require('../extensions/scratch3_microbit'),
-    text2speech: Scratch3Text2SpeechBlocks,
+    text2speech: () => require('../extensions/scratch3_text2speech'),
-    translate: Scratch3TranslateBlocks,
+    translate: () => require('../extensions/scratch3_translate'),
-    videoSensing: Scratch3VideoSensingBlocks,
+    videoSensing: () => require('../extensions/scratch3_video_sensing'),
-    speech2text: Scratch3Speech2TextBlocks,
+    speech2text: () => require('../extensions/scratch3_speech2text'),
-    ev3: Scratch3Ev3Blocks,
+    ev3: () => require('../extensions/scratch3_ev3'),
-    makeymakey: Scratch3MakeyMakeyBlocks,
+    makeymakey: () => require('../extensions/scratch3_makeymakey'),
-    boost: Scratch3BoostBlocks
+    boost: () => require('../extensions/scratch3_boost')
-    // gdxfor: Scratch3GdxForBlocks
+    // todo: only load this extension once we have a compatible way to load its
+    // Vernier module dependency.
+    // gdxfor: () => require('../extensions/scratch3_gdx_for')
 };
 
 /**
@@ -135,7 +123,7 @@ class ExtensionManager {
                 return Promise.reject(new Error(message));
             }
 
-            const extension = builtinExtensions[extensionURL];
+            const extension = builtinExtensions[extensionURL]();
             const extensionInstance = new extension(this.runtime);
             return this._registerInternalExtension(extensionInstance).then(serviceName => {
                 this._loadedExtensions.set(extensionURL, serviceName);

src/extensions/scratch3_text2speech/index.js

@@ -65,6 +65,41 @@ const GIANT_ID = 'GIANT';
  */
 const KITTEN_ID = 'KITTEN';
 
+/**
+ * Playback rate for the tenor voice, for cases where we have only a female gender voice.
+ */
+const FEMALE_TENOR_RATE = 0.89; // -2 semitones
+
+/**
+ * Playback rate for the giant voice, for cases where we have only a female gender voice.
+ */
+const FEMALE_GIANT_RATE = 0.79; // -4 semitones
+
+/**
+ * Language ids. The value for each language id is a valid Scratch locale.
+ */
+const CHINESE_ID = 'zh-cn';
+const DANISH_ID = 'da';
+const DUTCH_ID = 'nl';
+const ENGLISH_ID = 'en';
+const FRENCH_ID = 'fr';
+const GERMAN_ID = 'de';
+const ICELANDIC_ID = 'is';
+const ITALIAN_ID = 'it';
+const JAPANESE_ID = 'ja';
+const KOREAN_ID = 'ko';
+const NORWEGIAN_ID = 'nb';
+const POLISH_ID = 'pl';
+const PORTUGUESE_BR_ID = 'pt-br';
+const PORTUGUESE_ID = 'pt';
+const ROMANIAN_ID = 'ro';
+const RUSSIAN_ID = 'ru';
+const SPANISH_ID = 'es';
+const SPANISH_419_ID = 'es-419';
+const SWEDISH_ID = 'sv';
+const TURKISH_ID = 'tr';
+const WELSH_ID = 'cy';
+
 /**
  * Class for the text2speech blocks.
  * @constructor
@@ -92,6 +127,12 @@ class Scratch3Text2SpeechBlocks {
         if (this.runtime) {
             runtime.on('targetWasCreated', this._onTargetCreated);
         }
+
+        /**
+         * A list of all Scratch locales that are supported by the extension.
+         * @type {Array}
+         */
+        this._supportedLocales = this._getSupportedLocales();
     }
 
     /**
@@ -148,55 +189,140 @@ class Scratch3Text2SpeechBlocks {
     }
 
     /**
-     * An object with language names mapped to their language codes.
+     * An object with information for each language.
+     *
+     * A note on the different sets of locales referred to in this extension:
+     *
+     * SCRATCH LOCALE
+     *      Set by the editor, and used to store the language state in the project.
+     *      Listed in l10n: https://github.com/LLK/scratch-l10n/blob/master/src/supported-locales.js
+     * SUPPORTED LOCALE
+     *      A Scratch locale that has a corresponding extension locale.
+     * EXTENSION LOCALE
+     *      A locale corresponding to one of the available spoken languages
+     *      in the extension. There can be multiple supported locales for a single
+     *      extension locale. For example, for both written versions of chinese,
+     *      zh-cn and zh-tw, we use a single spoken language (Mandarin). So there
+     *      are two supported locales, with a single extension locale.
+     * SPEECH SYNTH LOCALE
+     *      A different locale code system, used by our speech synthesis service.
+     *      Each extension locale has a speech synth locale.
      */
     get LANGUAGE_INFO () {
         return {
-            'Danish': 'da',
+            [CHINESE_ID]: {
-            'Dutch': 'nl',
+                name: 'Chinese (Mandarin)',
-            'English': 'en',
+                locales: ['zh-cn', 'zh-tw'],
-            'French': 'fr',
+                speechSynthLocale: 'cmn-CN',
-            'German': 'de',
+                singleGender: true
-            'Icelandic': 'is',
+            },
-            'Italian': 'it',
+            [DANISH_ID]: {
-            'Japanese': 'ja',
+                name: 'Danish',
-            'Polish': 'pl',
+                locales: ['da'],
-            'Portuguese (Brazilian)': 'pt-br',
+                speechSynthLocale: 'da-DK'
-            'Portuguese (European)': 'pt',
+            },
-            'Russian': 'ru',
+            [DUTCH_ID]: {
-            'Spanish (European)': 'es',
+                name: 'Dutch',
-            'Spanish (Latin American)': 'es-419'
+                locales: ['nl'],
-        };
+                speechSynthLocale: 'nl-NL'
+            },
+            [ENGLISH_ID]: {
+                name: 'English',
+                locales: ['en'],
+                speechSynthLocale: 'en-US'
+            },
+            [FRENCH_ID]: {
+                name: 'French',
+                locales: ['fr'],
+                speechSynthLocale: 'fr-FR'
+            },
+            [GERMAN_ID]: {
+                name: 'German',
+                locales: ['de'],
+                speechSynthLocale: 'de-DE'
+            },
+            [ICELANDIC_ID]: {
+                name: 'Icelandic',
+                locales: ['is'],
+                speechSynthLocale: 'is-IS'
+            },
+            [ITALIAN_ID]: {
+                name: 'Italian',
+                locales: ['it'],
+                speechSynthLocale: 'it-IT'
+            },
+            [JAPANESE_ID]: {
+                name: 'Japanese',
+                locales: ['ja', 'ja-Hira'],
+                speechSynthLocale: 'ja-JP'
+            },
+            [KOREAN_ID]: {
+                name: 'Korean',
+                locales: ['ko'],
+                speechSynthLocale: 'ko-KR',
+                singleGender: true
+            },
+            [NORWEGIAN_ID]: {
+                name: 'Norwegian',
+                locales: ['nb', 'nn'],
+                speechSynthLocale: 'nb-NO',
+                singleGender: true
+            },
+            [POLISH_ID]: {
+                name: 'Polish',
+                locales: ['pl'],
+                speechSynthLocale: 'pl-PL'
+            },
+            [PORTUGUESE_BR_ID]: {
+                name: 'Portuguese (Brazilian)',
+                locales: ['pt-br'],
+                speechSynthLocale: 'pt-BR'
+            },
+            [PORTUGUESE_ID]: {
+                name: 'Portuguese (European)',
+                locales: ['pt'],
+                speechSynthLocale: 'pt-PT'
+            },
+            [ROMANIAN_ID]: {
+                name: 'Romanian',
+                locales: ['ro'],
+                speechSynthLocale: 'ro-RO',
+                singleGender: true
+            },
+            [RUSSIAN_ID]: {
+                name: 'Russian',
+                locales: ['ru'],
+                speechSynthLocale: 'ru-RU'
+            },
+            [SPANISH_ID]: {
+                name: 'Spanish (European)',
+                locales: ['es'],
+                speechSynthLocale: 'es-ES'
+            },
+            [SPANISH_419_ID]: {
+                name: 'Spanish (Latin American)',
+                locales: ['es-419'],
+                speechSynthLocale: 'es-US'
+            },
+            [SWEDISH_ID]: {
+                name: 'Swedish',
+                locales: ['sv'],
+                speechSynthLocale: 'sv-SE',
+                singleGender: true
+            },
+            [TURKISH_ID]: {
+                name: 'Turkish',
+                locales: ['tr'],
+                speechSynthLocale: 'tr-TR',
+                singleGender: true
+            },
+            [WELSH_ID]: {
+                name: 'Welsh',
+                locales: ['cy'],
+                speechSynthLocale: 'cy-GB',
+                singleGender: true
             }
-
-    /**
-     * This is a temporary adapter to convert Scratch locale codes to Amazon polly's locale codes.
-     * @todo remove this once the speech synthesis server can perform this conversion
-     * @param {string} locale the Scratch locale to convert.
-     * @return {string} the Amazon polly locale.
-     */
-    localeToPolly (locale) {
-        const pollyLocales = {
-            'da': 'da-DK', // Danish
-            'nl': 'nl-NL', // Dutch
-            'en': 'en-US', // English
-            'fr': 'fr-FR', // French
-            'de': 'de-DE', // German
-            'is': 'is-IS', // Icelandic
-            'it': 'it-IT', // Italian
-            'ja': 'ja-JP', // Japanese
-            'pl': 'pl-PL', // Polish
-            'pt-br': 'pt-BR', // Portuguese (Brazilian)
-            'pt': 'pt-PT', // Portuguese (European)
-            'ru': 'ru-RU', // Russian
-            'es': 'es-ES', // Spanish (European)
-            'es-419': 'es-US' // Spanish (Latin American)
         };
-        let converted = 'en-US';
-        if (pollyLocales[locale]) {
-            converted = pollyLocales[locale];
-        }
-        return converted;
     }
 
     /**
@@ -222,7 +348,7 @@ class Scratch3Text2SpeechBlocks {
      * @type {string}
      */
     get DEFAULT_LANGUAGE () {
-        return 'en';
+        return ENGLISH_ID;
     }
 
     /**
@@ -272,7 +398,11 @@ class Scratch3Text2SpeechBlocks {
 
         return {
             id: 'text2speech',
-            name: 'Text to Speech',
+            name: formatMessage({
+                id: 'text2speech.categoryName',
+                default: 'Text to Speech',
+                description: 'Name of the Text to Speech extension.'
+            }),
             blockIconURI: blockIconURI,
             menuIconURI: menuIconURI,
             blocks: [
@@ -334,7 +464,7 @@ class Scratch3Text2SpeechBlocks {
     /**
      * Get the language code currently set in the editor, or fall back to the
      * browser locale.
-     * @return {string} the language code.
+     * @return {string} a Scratch locale code.
      */
     getEditorLanguage () {
         return formatMessage.setup().locale ||
@@ -342,8 +472,8 @@ class Scratch3Text2SpeechBlocks {
     }
 
     /**
-     * Get the language for speech synthesis.
+     * Get the language code currently set for the extension.
-     * @returns {string} the language code.
+     * @returns {string} a Scratch locale code.
      */
     getCurrentLanguage () {
         const stage = this.runtime.getTargetForStage();
@@ -356,17 +486,18 @@ class Scratch3Text2SpeechBlocks {
     }
 
     /**
-     * Set the language for speech synthesis.
+     * Set the language code for the extension.
      * It is stored in the stage so it can be saved and loaded with the project.
-     * @param {string} languageCode a locale code to set.
+     * @param {string} locale a locale code.
      */
-    setCurrentLanguage (languageCode) {
+    setCurrentLanguage (locale) {
         const stage = this.runtime.getTargetForStage();
         if (!stage) return;
-        // Only set the language if it is in the list.
+
-        if (this.isSupportedLanguage(languageCode)) {
+        if (this.isSupportedLanguage(locale)) {
-            stage.textToSpeechLanguage = languageCode;
+            stage.textToSpeechLanguage = this._getExtensionLocaleForSupportedLocale(locale);
         }
+
         // If the language is null, set it to the default language.
         // This can occur e.g. if the extension was loaded with the editor
         // set to a language that is not in the list.
@@ -376,13 +507,49 @@ class Scratch3Text2SpeechBlocks {
     }
 
     /**
-     * Check if a language code is in the list of supported languages for the
+     * Get the extension locale for a supported locale, or null.
+     * @param {string} locale a locale code.
+     * @returns {?string} a locale supported by the extension.
+     */
+    _getExtensionLocaleForSupportedLocale (locale) {
+        for (const lang in this.LANGUAGE_INFO) {
+            if (this.LANGUAGE_INFO[lang].locales.includes(locale)) {
+                return lang;
+            }
+        }
+        log.error(`cannot find extension locale for locale ${locale}`);
+    }
+
+    /**
+     * Get the locale code used by the speech synthesis server corresponding to
+     * the current language code set for the extension.
+     * @returns {string} a speech synthesis locale.
+     */
+    _getSpeechSynthLocale () {
+        let speechSynthLocale = this.LANGUAGE_INFO[this.DEFAULT_LANGUAGE].speechSynthLocale;
+        if (this.LANGUAGE_INFO[this.getCurrentLanguage()]) {
+            speechSynthLocale = this.LANGUAGE_INFO[this.getCurrentLanguage()].speechSynthLocale;
+        }
+        return speechSynthLocale;
+    }
+
+    /**
+     * Get an array of the locales supported by this extension.
+     * @returns {Array} An array of locale strings.
+     */
+    _getSupportedLocales () {
+        return Object.keys(this.LANGUAGE_INFO).reduce((acc, lang) =>
+            acc.concat(this.LANGUAGE_INFO[lang].locales), []);
+    }
+
+    /**
+     * Check if a Scratch language code is in the list of supported languages for the
      * speech synthesis service.
      * @param {string} languageCode the language code to check.
      * @returns {boolean} true if the language code is supported.
      */
     isSupportedLanguage (languageCode) {
-        return Object.values(this.LANGUAGE_INFO).includes(languageCode);
+        return this._supportedLocales.includes(languageCode);
     }
 
     /**
@@ -401,9 +568,9 @@ class Scratch3Text2SpeechBlocks {
      * @return {array} the text and value for each menu item.
      */
     getLanguageMenu () {
-        return Object.keys(this.LANGUAGE_INFO).map(languageName => ({
+        return Object.keys(this.LANGUAGE_INFO).map(key => ({
-            text: languageName,
+            text: this.LANGUAGE_INFO[key].name,
-            value: this.LANGUAGE_INFO[languageName]
+            value: key
         }));
     }
 
@@ -457,16 +624,29 @@ class Scratch3Text2SpeechBlocks {
     speakAndWait (args, util) {
         // Cast input to string
         let words = Cast.toString(args.WORDS);
-        let locale = this.localeToPolly(this.getCurrentLanguage());
+        let locale = this._getSpeechSynthLocale();
 
         const state = this._getState(util.target);
 
-        const gender = this.VOICE_INFO[state.voiceId].gender;
+        let gender = this.VOICE_INFO[state.voiceId].gender;
-        const playbackRate = this.VOICE_INFO[state.voiceId].playbackRate;
+        let playbackRate = this.VOICE_INFO[state.voiceId].playbackRate;
+
+        // Special case for voices where the synthesis service only provides a
+        // single gender voice. In that case, always request the female voice,
+        // and set special playback rates for the tenor and giant voices.
+        if (this.LANGUAGE_INFO[this.getCurrentLanguage()].singleGender) {
+            gender = 'female';
+            if (state.voiceId === TENOR_ID) {
+                playbackRate = FEMALE_TENOR_RATE;
+            }
+            if (state.voiceId === GIANT_ID) {
+                playbackRate = FEMALE_GIANT_RATE;
+            }
+        }
 
         if (state.voiceId === KITTEN_ID) {
             words = words.replace(/\S+/g, 'meow');
-            locale = 'en-US';
+            locale = this.LANGUAGE_INFO[this.DEFAULT_LANGUAGE].speechSynthLocale;
         }
 
         // Build up URL

src/import/load-costume.js

@@ -32,6 +32,53 @@ const loadVector_ = function (costume, runtime, rotationCenter, optVersion) {
     });
 };
 
+const canvasPool = (function () {
+    /**
+     * A pool of canvas objects that can be reused to reduce memory
+     * allocations. And time spent in those allocations and the later garbage
+     * collection.
+     */
+    class CanvasPool {
+        constructor () {
+            this.pool = [];
+            this.clearSoon = null;
+        }
+
+        /**
+         * After a short wait period clear the pool to let the VM collect
+         * garbage.
+         */
+        clear () {
+            if (!this.clearSoon) {
+                this.clearSoon = new Promise(resolve => setTimeout(resolve, 1000))
+                    .then(() => {
+                        this.pool.length = 0;
+                        this.clearSoon = null;
+                    });
+            }
+        }
+
+        /**
+         * Return a canvas. Create the canvas if the pool is empty.
+         * @returns {HTMLCanvasElement} A canvas element.
+         */
+        create () {
+            return this.pool.pop() || document.createElement('canvas');
+        }
+
+        /**
+         * Release the canvas to be reused.
+         * @param {HTMLCanvasElement} canvas A canvas element.
+         */
+        release (canvas) {
+            this.clear();
+            this.pool.push(canvas);
+        }
+    }
+
+    return new CanvasPool();
+}());
+
 /**
  * Return a promise to fetch a bitmap from storage and return it as a canvas
  * If the costume has bitmapResolution 1, it will be converted to bitmapResolution 2 here (the standard for Scratch 3)
@@ -54,64 +101,53 @@ const fetchBitmapCanvas_ = function (costume, runtime, rotationCenter) {
         return Promise.reject('No V2 Bitmap adapter present.');
     }
 
+    return Promise.all([costume.asset, costume.textLayerAsset].map(asset => {
+        if (!asset) {
+            return null;
+        }
+
+        if (typeof createImageBitmap !== 'undefined') {
+            return createImageBitmap(
+                new Blob([asset.data], {type: asset.assetType.contentType})
+            );
+        }
+
         return new Promise((resolve, reject) => {
-        const baseImageElement = new Image();
+            const image = new Image();
-        let textImageElement;
+            image.onload = function () {
-
+                resolve(image);
-        // We need to wait for 2 images total to load. loadedOne will be true when one
+                image.onload = null;
-        // is done, and we are just waiting for one more.
+                image.onerror = null;
-        let loadedOne = false;
+            };
-
+            image.onerror = function () {
-        const onError = function () {
-            // eslint-disable-next-line no-use-before-define
-            removeEventListeners();
                 reject('Costume load failed. Asset could not be read.');
+                image.onload = null;
+                image.onerror = null;
             };
-        const onLoad = function () {
+            image.src = asset.encodeDataURI();
-            if (loadedOne) {
+        });
-                // eslint-disable-next-line no-use-before-define
+    }))
-                removeEventListeners();
+        .then(([baseImageElement, textImageElement]) => {
-                resolve([baseImageElement, textImageElement]);
+            const mergeCanvas = canvasPool.create();
-            } else {
-                loadedOne = true;
-            }
-        };
 
-        const removeEventListeners = function () {
-            baseImageElement.removeEventListener('error', onError);
-            baseImageElement.removeEventListener('load', onLoad);
-            if (textImageElement) {
-                textImageElement.removeEventListener('error', onError);
-                textImageElement.removeEventListener('load', onLoad);
-            }
-        };
-
-        baseImageElement.addEventListener('load', onLoad);
-        baseImageElement.addEventListener('error', onError);
-        if (costume.textLayerAsset) {
-            textImageElement = new Image();
-            textImageElement.addEventListener('load', onLoad);
-            textImageElement.addEventListener('error', onError);
-            textImageElement.src = costume.textLayerAsset.encodeDataURI();
-        } else {
-            loadedOne = true;
-        }
-        baseImageElement.src = costume.asset.encodeDataURI();
-    }).then(imageElements => {
-        const [baseImageElement, textImageElement] = imageElements;
-
-        let canvas = document.createElement('canvas');
             const scale = costume.bitmapResolution === 1 ? 2 : 1;
-        canvas.width = baseImageElement.width;
+            mergeCanvas.width = baseImageElement.width;
-        canvas.height = baseImageElement.height;
+            mergeCanvas.height = baseImageElement.height;
 
-        const ctx = canvas.getContext('2d');
+            const ctx = mergeCanvas.getContext('2d');
             ctx.drawImage(baseImageElement, 0, 0);
             if (textImageElement) {
                 ctx.drawImage(textImageElement, 0, 0);
             }
+            // Track the canvas we merged the bitmaps onto separately from the
+            // canvas that we receive from resize if scale is not 1. We know
+            // resize treats mergeCanvas as read only data. We don't know when
+            // resize may use or modify the canvas. So we'll only release the
+            // mergeCanvas back into the canvas pool. Reusing the canvas from
+            // resize may cause errors.
+            let canvas = mergeCanvas;
             if (scale !== 1) {
-            canvas = runtime.v2BitmapAdapter.resize(canvas, canvas.width * scale, canvas.height * scale);
+                canvas = runtime.v2BitmapAdapter.resize(mergeCanvas, canvas.width * scale, canvas.height * scale);
             }
 
             // By scaling, we've converted it to bitmap resolution 2
@@ -128,8 +164,9 @@ const fetchBitmapCanvas_ = function (costume, runtime, rotationCenter) {
             delete costume.textLayerAsset;
 
             return {
-            canvas: canvas,
+                canvas,
-            rotationCenter: rotationCenter,
+                mergeCanvas,
+                rotationCenter,
                 // True if the asset matches the base layer; false if it required adjustment
                 assetMatchesBase: scale === 1 && !textImageElement
             };
@@ -141,12 +178,17 @@ const fetchBitmapCanvas_ = function (costume, runtime, rotationCenter) {
         });
 };
 
-const loadBitmap_ = function (costume, runtime, rotationCenter) {
+const loadBitmap_ = function (costume, runtime, _rotationCenter) {
-    return fetchBitmapCanvas_(costume, runtime, rotationCenter).then(fetched => new Promise(resolve => {
+    return fetchBitmapCanvas_(costume, runtime, _rotationCenter)
-        rotationCenter = fetched.rotationCenter;
+        .then(fetched => {
-
             const updateCostumeAsset = function (dataURI) {
                 if (!runtime.v2BitmapAdapter) {
+                    // TODO: This might be a bad practice since the returned
+                    // promise isn't acted on. If this is something we should be
+                    // creating a rejected promise for we should also catch it
+                    // somewhere and act on that error (like logging).
+                    //
+                    // Return a rejection to stop executing updateCostumeAsset.
                     return Promise.reject('No V2 Bitmap adapter present.');
                 }
 
@@ -166,11 +208,13 @@ const loadBitmap_ = function (costume, runtime, rotationCenter) {
             if (!fetched.assetMatchesBase) {
                 updateCostumeAsset(fetched.canvas.toDataURL());
             }
-        resolve(fetched.canvas);
+
-    }))
+            return fetched;
-        .then(canvas => {
+        })
+        .then(({canvas, mergeCanvas, rotationCenter}) => {
             // createBitmapSkin does the right thing if costume.bitmapResolution or rotationCenter are undefined...
             costume.skinId = runtime.renderer.createBitmapSkin(canvas, costume.bitmapResolution, rotationCenter);
+            canvasPool.release(mergeCanvas);
             const renderSize = runtime.renderer.getSkinSize(costume.skinId);
             costume.size = [renderSize[0] * 2, renderSize[1] * 2]; // Actual size, since all bitmaps are resolution 2
 

src/io/ble.js

@@ -73,14 +73,19 @@ class BLE extends JSONRPCWebSocket {
      * Close the websocket.
      */
     disconnect () {
-        if (!this._connected) return;
+        if (this._ws.readyState === this._ws.OPEN) {
-
             this._ws.close();
+        }
+
+        if (this._connected) {
             this._connected = false;
+        }
+        
         if (this._discoverTimeoutID) {
             window.clearTimeout(this._discoverTimeoutID);
         }
 
+        // Sets connection status icon to orange
         this._runtime.emit(this._runtime.constructor.PERIPHERAL_DISCONNECTED);
     }
 

src/io/bt.js

@@ -75,14 +75,19 @@ class BT extends JSONRPCWebSocket {
      * Close the websocket.
      */
     disconnect () {
-        if (!this._connected) return;
+        if (this._ws.readyState === this._ws.OPEN) {
-
             this._ws.close();
+        }
+
+        if (this._connected) {
             this._connected = false;
+        }
+
         if (this._discoverTimeoutID) {
             window.clearTimeout(this._discoverTimeoutID);
         }
 
+        // Sets connection status icon to orange
         this._runtime.emit(this._runtime.constructor.PERIPHERAL_DISCONNECTED);
     }
 

src/serialization/sb3.js

@@ -823,46 +823,32 @@ const deserializeBlocks = function (blocks) {
 
 
 /**
- * Parse a single "Scratch object" and create all its in-memory VM objects.
+ * Parse the assets of a single "Scratch object" and load them. This
+ * preprocesses objects to support loading the data for those assets over a
+ * network while the objects are further processed into Blocks, Sprites, and a
+ * list of needed Extensions.
  * @param {!object} object From-JSON "Scratch object:" sprite, stage, watcher.
  * @param {!Runtime} runtime Runtime object to load all structures into.
- * @param {ImportedExtensionsInfo} extensions - (in/out) parsed extension information will be stored here.
  * @param {JSZip} zip Sb3 file describing this project (to load assets from)
- * @return {!Promise.<Target>} Promise for the target created (stage or sprite), or null for unsupported objects.
+ * @return {?{costumePromises:Array.<Promise>,soundPromises:Array.<Promise>,soundBank:SoundBank}}
+ * Object of arrays of promises for asset objects used in Sprites. As well as a
+ * SoundBank for the sound assets. null for unsupported objects.
  */
-const parseScratchObject = function (object, runtime, extensions, zip) {
+const parseScratchAssets = function (object, runtime, zip) {
     if (!object.hasOwnProperty('name')) {
         // Watcher/monitor - skip this object until those are implemented in VM.
         // @todo
         return Promise.resolve(null);
     }
-    // Blocks container for this object.
-    const blocks = new Blocks(runtime);
 
-    // @todo: For now, load all Scratch objects (stage/sprites) as a Sprite.
+    const assets = {
-    const sprite = new Sprite(blocks, runtime);
+        costumePromises: null,
+        soundPromises: null,
+        soundBank: runtime.audioEngine && runtime.audioEngine.createBank()
+    };
 
-    // Sprite/stage name from JSON.
-    if (object.hasOwnProperty('name')) {
-        sprite.name = object.name;
-    }
-    if (object.hasOwnProperty('blocks')) {
-        deserializeBlocks(object.blocks);
-        // Take a second pass to create objects and add extensions
-        for (const blockId in object.blocks) {
-            if (!object.blocks.hasOwnProperty(blockId)) continue;
-            const blockJSON = object.blocks[blockId];
-            blocks.createBlock(blockJSON);
-
-            // If the block is from an extension, record it.
-            const extensionID = getExtensionIdForOpcode(blockJSON.opcode);
-            if (extensionID) {
-                extensions.extensionIDs.add(extensionID);
-            }
-        }
-    }
     // Costumes from JSON.
-    const costumePromises = (object.costumes || []).map(costumeSource => {
+    assets.costumePromises = (object.costumes || []).map(costumeSource => {
         // @todo: Make sure all the relevant metadata is being pulled out.
         const costume = {
             // costumeSource only has an asset if an image is being uploaded as
@@ -894,7 +880,7 @@ const parseScratchObject = function (object, runtime, extensions, zip) {
         // process has been completed
     });
     // Sounds from JSON
-    const soundPromises = (object.sounds || []).map(soundSource => {
+    assets.soundPromises = (object.sounds || []).map(soundSource => {
         const sound = {
             assetId: soundSource.assetId,
             format: soundSource.format,
@@ -914,10 +900,59 @@ const parseScratchObject = function (object, runtime, extensions, zip) {
         // any translation that needs to happen will happen in the process
         // of building up the costume object into an sb3 format
         return deserializeSound(sound, runtime, zip)
-            .then(() => loadSound(sound, runtime, sprite.soundBank));
+            .then(() => loadSound(sound, runtime, assets.soundBank));
         // Only attempt to load the sound after the deserialization
         // process has been completed.
     });
+
+    return assets;
+};
+
+/**
+ * Parse a single "Scratch object" and create all its in-memory VM objects.
+ * @param {!object} object From-JSON "Scratch object:" sprite, stage, watcher.
+ * @param {!Runtime} runtime Runtime object to load all structures into.
+ * @param {ImportedExtensionsInfo} extensions - (in/out) parsed extension information will be stored here.
+ * @param {JSZip} zip Sb3 file describing this project (to load assets from)
+ * @param {object} assets - Promises for assets of this scratch object grouped
+ *   into costumes and sounds
+ * @return {!Promise.<Target>} Promise for the target created (stage or sprite), or null for unsupported objects.
+ */
+const parseScratchObject = function (object, runtime, extensions, zip, assets) {
+    if (!object.hasOwnProperty('name')) {
+        // Watcher/monitor - skip this object until those are implemented in VM.
+        // @todo
+        return Promise.resolve(null);
+    }
+    // Blocks container for this object.
+    const blocks = new Blocks(runtime);
+
+    // @todo: For now, load all Scratch objects (stage/sprites) as a Sprite.
+    const sprite = new Sprite(blocks, runtime);
+
+    // Sprite/stage name from JSON.
+    if (object.hasOwnProperty('name')) {
+        sprite.name = object.name;
+    }
+    if (object.hasOwnProperty('blocks')) {
+        deserializeBlocks(object.blocks);
+        // Take a second pass to create objects and add extensions
+        for (const blockId in object.blocks) {
+            if (!object.blocks.hasOwnProperty(blockId)) continue;
+            const blockJSON = object.blocks[blockId];
+            blocks.createBlock(blockJSON);
+
+            // If the block is from an extension, record it.
+            const extensionID = getExtensionIdForOpcode(blockJSON.opcode);
+            if (extensionID) {
+                extensions.extensionIDs.add(extensionID);
+            }
+        }
+    }
+    // Costumes from JSON.
+    const {costumePromises} = assets;
+    // Sounds from JSON
+    const {soundBank, soundPromises} = assets;
     // Create the first clone, and load its run-state from JSON.
     const target = sprite.createClone(object.isStage ? StageLayering.BACKGROUND_LAYER : StageLayering.SPRITE_LAYER);
     // Load target properties from JSON.
@@ -1039,6 +1074,8 @@ const parseScratchObject = function (object, runtime, extensions, zip) {
     });
     Promise.all(soundPromises).then(sounds => {
         sprite.sounds = sounds;
+        // Make sure if soundBank is undefined, sprite.soundBank is then null.
+        sprite.soundBank = soundBank || null;
     });
     return Promise.all(costumePromises.concat(soundPromises)).then(() => target);
 };
@@ -1190,10 +1227,16 @@ const deserialize = function (json, runtime, zip, isSingleSprite) {
 
     const monitorObjects = json.monitors || [];
 
-    return Promise.all(
+    return Promise.resolve(
         targetObjects.map(target =>
-            parseScratchObject(target, runtime, extensions, zip))
+            parseScratchAssets(target, runtime, zip))
     )
+        // Force this promise to wait for the next loop in the js tick. Let
+        // storage have some time to send off asset requests.
+        .then(assets => Promise.resolve(assets))
+        .then(assets => Promise.all(targetObjects
+            .map((target, index) =>
+                parseScratchObject(target, runtime, extensions, zip, assets[index]))))
         .then(targets => targets // Re-sort targets back into original sprite-pane ordering
             .map((t, i) => {
                 // Add layer order property to deserialized targets.

src/sprites/rendered-target.js

@@ -1,6 +1,7 @@
 const log = require('../util/log');
 const MathUtil = require('../util/math-util');
 const StringUtil = require('../util/string-util');
+const Cast = require('../util/cast');
 const Clone = require('../util/clone');
 const Target = require('../engine/target');
 const StageLayering = require('../engine/stage-layering');
@@ -840,6 +841,7 @@ class RenderedTarget extends Target {
      * @return {boolean} True iff touching a clone of the sprite.
      */
     isTouchingSprite (spriteName) {
+        spriteName = Cast.toString(spriteName);
         const firstClone = this.runtime.getSpriteTargetByName(spriteName);
         if (!firstClone || !this.renderer) {
             return false;

src/virtual-machine.js

@@ -1,4 +1,10 @@
-const TextEncoder = require('text-encoding').TextEncoder;
+let _TextEncoder;
+if (typeof TextEncoder === 'undefined') {
+    _TextEncoder = require('text-encoding').TextEncoder;
+} else {
+    /* global TextEncoder */
+    _TextEncoder = TextEncoder;
+}
 const EventEmitter = require('events');
 const JSZip = require('jszip');
 
@@ -8,12 +14,8 @@ const ExtensionManager = require('./extension-support/extension-manager');
 const log = require('./util/log');
 const MathUtil = require('./util/math-util');
 const Runtime = require('./engine/runtime');
-const {SB1File, ValidationError} = require('scratch-sb1-converter');
-const sb2 = require('./serialization/sb2');
-const sb3 = require('./serialization/sb3');
 const StringUtil = require('./util/string-util');
 const formatMessage = require('format-message');
-const validate = require('scratch-parser');
 
 const Variable = require('./engine/variable');
 const newBlockIds = require('./util/new-block-ids');
@@ -297,6 +299,7 @@ class VirtualMachine extends EventEmitter {
         }
 
         const validationPromise = new Promise((resolve, reject) => {
+            const validate = require('scratch-parser');
             // The second argument of false below indicates to the validator that the
             // input should be parsed/validated as an entire project (and not a single sprite)
             validate(input, false, (error, res) => {
@@ -305,6 +308,8 @@ class VirtualMachine extends EventEmitter {
             });
         })
             .catch(error => {
+                const {SB1File, ValidationError} = require('scratch-sb1-converter');
+
                 try {
                     const sb1 = new SB1File(input);
                     const json = sb1.json;
@@ -410,6 +415,8 @@ class VirtualMachine extends EventEmitter {
      * specified by optZipType or blob by default.
      */
     exportSprite (targetId, optZipType) {
+        const sb3 = require('./serialization/sb3');
+
         const soundDescs = serializeSounds(this.runtime, targetId);
         const costumeDescs = serializeCostumes(this.runtime, targetId);
         const spriteJson = StringUtil.stringify(sb3.serialize(this.runtime, targetId));
@@ -432,6 +439,7 @@ class VirtualMachine extends EventEmitter {
      * @return {string} Serialized state of the runtime.
      */
     toJSON () {
+        const sb3 = require('./serialization/sb3');
         return StringUtil.stringify(sb3.serialize(this.runtime));
     }
 
@@ -461,9 +469,11 @@ class VirtualMachine extends EventEmitter {
         const deserializePromise = function () {
             const projectVersion = projectJSON.projectVersion;
             if (projectVersion === 2) {
+                const sb2 = require('./serialization/sb2');
                 return sb2.deserialize(projectJSON, runtime, false, zip);
             }
             if (projectVersion === 3) {
+                const sb3 = require('./serialization/sb3');
                 return sb3.deserialize(projectJSON, runtime, zip);
             }
             return Promise.reject('Unable to verify Scratch Project version.');
@@ -553,6 +563,7 @@ class VirtualMachine extends EventEmitter {
         }
 
         const validationPromise = new Promise((resolve, reject) => {
+            const validate = require('scratch-parser');
             // The second argument of true below indicates to the parser/validator
             // that the given input should be treated as a single sprite and not
             // an entire project
@@ -592,6 +603,7 @@ class VirtualMachine extends EventEmitter {
     _addSprite2 (sprite, zip) {
         // Validate & parse
 
+        const sb2 = require('./serialization/sb2');
         return sb2.deserialize(sprite, this.runtime, true, zip)
             .then(({targets, extensions}) =>
                 this.installTargets(targets, extensions, false));
@@ -605,7 +617,7 @@ class VirtualMachine extends EventEmitter {
      */
     _addSprite3 (sprite, zip) {
         // Validate & parse
-
+        const sb3 = require('./serialization/sb3');
         return sb3
             .deserialize(sprite, this.runtime, zip, true)
             .then(({targets, extensions}) => this.installTargets(targets, extensions, false));
@@ -912,7 +924,7 @@ class VirtualMachine extends EventEmitter {
         costume.asset = storage.createAsset(
             storage.AssetType.ImageVector,
             costume.dataFormat,
-            (new TextEncoder()).encode(svg),
+            (new _TextEncoder()).encode(svg),
             null,
             true // generate md5
         );
@@ -1187,6 +1199,8 @@ class VirtualMachine extends EventEmitter {
      * @return {!Promise} Promise that resolves when the extensions and blocks have been added.
      */
     shareBlocksToTarget (blocks, targetId, optFromTargetId) {
+        const sb3 = require('./serialization/sb3');
+
         const copiedBlocks = JSON.parse(JSON.stringify(blocks));
         newBlockIds(copiedBlocks);
         const target = this.runtime.getTargetById(targetId);

test/unit/blocks_looks.js

@@ -211,3 +211,48 @@ test('numbers should be rounded to two decimals in say', t => {
 
     looks.say(args, util);
 });
+
+test('clamp graphic effects', t => {
+    const rt = new Runtime();
+    const looks = new Looks(rt);
+    const expectedValues = {
+        brightness: {high: 100, low: -100},
+        ghost: {high: 100, low: 0},
+        color: {high: 500, low: -500},
+        fisheye: {high: 500, low: -500},
+        whirl: {high: 500, low: -500},
+        pixelate: {high: 500, low: -500},
+        mosaic: {high: 500, low: -500}
+    };
+    const args = [
+        {EFFECT: 'brightness', VALUE: 500, CLAMP: 'high'},
+        {EFFECT: 'brightness', VALUE: -500, CLAMP: 'low'},
+        {EFFECT: 'ghost', VALUE: 500, CLAMP: 'high'},
+        {EFFECT: 'ghost', VALUE: -500, CLAMP: 'low'},
+        {EFFECT: 'color', VALUE: 500, CLAMP: 'high'},
+        {EFFECT: 'color', VALUE: -500, CLAMP: 'low'},
+        {EFFECT: 'fisheye', VALUE: 500, CLAMP: 'high'},
+        {EFFECT: 'fisheye', VALUE: -500, CLAMP: 'low'},
+        {EFFECT: 'whirl', VALUE: 500, CLAMP: 'high'},
+        {EFFECT: 'whirl', VALUE: -500, CLAMP: 'low'},
+        {EFFECT: 'pixelate', VALUE: 500, CLAMP: 'high'},
+        {EFFECT: 'pixelate', VALUE: -500, CLAMP: 'low'},
+        {EFFECT: 'mosaic', VALUE: 500, CLAMP: 'high'},
+        {EFFECT: 'mosaic', VALUE: -500, CLAMP: 'low'}
+    ];
+
+    util.target.setEffect = function (effectName, actualValue) {
+        const clamp = actualValue > 0 ? 'high' : 'low';
+        rt.emit(effectName + clamp, effectName, actualValue);
+    };
+
+    for (const arg of args) {
+        rt.addListener(arg.EFFECT + arg.CLAMP, (effectName, actualValue) => {
+            const expected = expectedValues[arg.EFFECT][arg.CLAMP];
+            t.strictEqual(actualValue, expected);
+        });
+
+        looks.setEffect(arg, util);
+    }
+    t.end();
+});

test/unit/engine_blocks.js

@@ -358,6 +358,43 @@ test('move no obscure shadow', t => {
     t.end();
 });
 
+test('move - attaching new shadow', t => {
+    const b = new Blocks(new Runtime());
+    // Block/shadow are null to mimic state right after a procedure_call block
+    // is mutated by adding an input. The "move" will attach the new shadow.
+    b.createBlock({
+        id: 'foo',
+        opcode: 'TEST_BLOCK',
+        next: null,
+        fields: {},
+        inputs: {
+            fooInput: {
+                name: 'fooInput',
+                block: null,
+                shadow: null
+            }
+        },
+        topLevel: true
+    });
+    b.createBlock({
+        id: 'bar',
+        opcode: 'TEST_BLOCK',
+        shadow: true,
+        next: null,
+        fields: {},
+        inputs: {},
+        topLevel: true
+    });
+    b.moveBlock({
+        id: 'bar',
+        newInput: 'fooInput',
+        newParent: 'foo'
+    });
+    t.equal(b._blocks.foo.inputs.fooInput.block, 'bar');
+    t.equal(b._blocks.foo.inputs.fooInput.shadow, 'bar');
+    t.end();
+});
+
 test('change', t => {
     const b = new Blocks(new Runtime());
     b.createBlock({

test/unit/extension_text_to_speech.js

@@ -0,0 +1,30 @@
+const test = require('tap').test;
+const TextToSpeech = require('../../src/extensions/scratch3_text2speech/index.js');
+
+const fakeStage = {
+    textToSpeechLanguage: null
+};
+
+const fakeRuntime = {
+    getTargetForStage: () => fakeStage,
+    on: () => {} // Stub out listener methods used in constructor.
+};
+
+const ext = new TextToSpeech(fakeRuntime);
+
+test('if no language is saved in the project, use default', t => {
+    t.strictEqual(ext.getCurrentLanguage(), 'en');
+    t.end();
+});
+
+test('if an unsupported language is dropped onto the set language block, use default', t => {
+    ext.setLanguage({LANGUAGE: 'nope'});
+    t.strictEqual(ext.getCurrentLanguage(), 'en');
+    t.end();
+});
+
+test('get the extension locale for a supported locale that differs', t => {
+    ext.setLanguage({LANGUAGE: 'ja-Hira'});
+    t.strictEqual(ext.getCurrentLanguage(), 'ja');
+    t.end();
+});