feat(build)!: Introduce exports section in package.json

package.json

@@ -54,14 +54,45 @@
     "test:compile:advanced": "gulp buildAdvancedCompilationTest --debug",
     "updateGithubPages": "npm ci && gulp gitUpdateGithubPages"
   },
-  "main": "./index.js",
-  "umd": "./blockly.min.js",
-  "unpkg": "./blockly.min.js",
-  "types": "./index.d.ts",
-  "browser": {
-    "./node.js": "./browser.js",
-    "./core.js": "./core-browser.js",
-    "./blockly-node.js": "./blockly.js"
+  "exports": {
+    ".": {
+      "types": "./index.d.ts",
+      "umd": "./blockly.min.js",
+      "default": "./index.js"
+    },
+    "./core": {
+      "types": "./core.d.ts",
+      "node": "./core-node.js",
+      "default": "./blockly_compressed.js"
+    },
+    "./blocks": {
+      "types": "./blocks.d.ts",
+      "default": "./blocks_compressed.js"
+    },
+    "./dart": {
+      "types": "./dart.d.ts",
+      "default": "./dart_compressed.js"
+    },
+    "./lua": {
+      "types": "./lua.d.ts",
+      "default": "./lua_compressed.js"
+    },
+    "./javascript": {
+      "types": "./javascript.d.ts",
+      "default": "./javascript_compressed.js"
+    },
+    "./php": {
+      "types": "./php.d.ts",
+      "default": "./php_compressed.js"
+    },
+    "./python": {
+      "types": "./python.d.ts",
+      "default": "./python_compressed.js"
+    },
+    "./msg/*": {
+      "types": "./msg/*.d.ts",
+      "default": "./msg/*.js"
+    }
   },
   "license": "Apache-2.0",
   "devDependencies": {

scripts/gulpfiles/build_tasks.js

@@ -23,7 +23,7 @@ const closureCompiler = require('google-closure-compiler').gulp();
 const argv = require('yargs').argv;
 const {rimraf} = require('rimraf');
 
-const {BUILD_DIR, RELEASE_DIR, TSC_OUTPUT_DIR, TYPINGS_BUILD_DIR} = require('./config');
+const {BUILD_DIR, LANG_BUILD_DIR, RELEASE_DIR, TSC_OUTPUT_DIR, TYPINGS_BUILD_DIR} = require('./config');
 const {getPackageJson} = require('./helper_tasks');
 
 const {posixPath, quote} = require('../helpers');
@@ -350,8 +350,7 @@ this removal!
  */
 function buildLangfiles(done) {
   // Create output directory.
-  const outputDir = path.join(BUILD_DIR, 'msg');
-  fs.mkdirSync(outputDir, {recursive: true});
+  fs.mkdirSync(LANG_BUILD_DIR, {recursive: true});
 
   // Run create_messages.py.
   let json_files = fs.readdirSync(path.join('msg', 'json'));
@@ -364,7 +363,7 @@ function buildLangfiles(done) {
   --source_synonym_file ${path.join('msg', 'json', 'synonyms.json')} \
   --source_constants_file ${path.join('msg', 'json', 'constants.json')} \
   --key_file ${path.join('msg', 'json', 'keys.json')} \
-  --output_dir ${outputDir} \
+  --output_dir ${LANG_BUILD_DIR} \
   --quiet ${json_files.join(' ')}`;
   execSync(createMessagesCmd, {stdio: 'inherit'});
 

scripts/gulpfiles/config.js

@@ -26,6 +26,9 @@ exports.BUILD_DIR = 'build';
 // Directory to write typings output to.
 exports.TYPINGS_BUILD_DIR = path.join(exports.BUILD_DIR, 'declarations');
 
+// Directory to write langfile output to.
+exports.LANG_BUILD_DIR = path.join(exports.BUILD_DIR, 'msg');
+
 // Directory where typescript compiler output can be found.
 // Matches the value in tsconfig.json: outDir
 exports.TSC_OUTPUT_DIR = path.join(exports.BUILD_DIR, 'src');