TS types output

.gitignore

@@ -10,10 +10,12 @@ tmp/
 dist/
 lib/
 es/
+types/
 .idea
 .vscode/
 .DS_Store
 .eslintcache
 .yo-rc.json
 npm-debug.log
 yarn-error.log
+eui.d.ts

.npmignore

@@ -5,6 +5,8 @@ tmp/
 wiki/
 generator-eui/
 test/
+types/
+src/
 src-docs/
 src-framer/
 .nvmrc

package.json

@@ -4,7 +4,7 @@
   "version": "5.0.1",
   "main": "lib",
   "module": "es",
-  "types": "src/index.d.ts",
+  "types": "eui.d.ts",
   "postcss": {},
   "docker_image": "node:8",
   "scripts": {
@@ -87,6 +87,7 @@
     "circular-dependency-plugin": "^5.0.2",
     "css-loader": "^0.28.7",
     "cssnano": "^4.0.5",
+    "dts-generator": "^2.1.0",
     "enzyme": "^3.1.0",
     "enzyme-adapter-react-16": "^1.0.2",
     "enzyme-to-json": "^3.3.0",

scripts/compile-eui.js

@@ -2,6 +2,7 @@ const { execSync } = require('child_process');
 const chalk = require('chalk');
 const shell = require('shelljs');
 const glob = require('glob');
+const path = require('path');
 
 function compileLib() {
   shell.mkdir('-p', 'lib/components/icon/assets/tokens', 'lib/services', 'lib/test');
@@ -16,6 +17,8 @@ function compileLib() {
 
   console.log(chalk.green('✔ Finished compiling src/'));
 
+  execSync(`node ${path.resolve(__dirname, 'dtsgenerator.js')}`);
+
   // Also copy over SVGs. Babel has a --copy-files option but that brings over
   // all kinds of things we don't want into the lib folder.
   shell.mkdir('-p', 'lib/components/icon/assets');

scripts/dtsgenerator.js

@@ -0,0 +1,59 @@
+const fs = require('fs');
+const path = require('path');
+const dtsGenerator = require('dts-generator').default;
+
+const baseDir = path.resolve(__dirname, '..');
+const srcDir = path.resolve(baseDir, 'src');
+
+const generator = dtsGenerator({
+  name: '@elastic/eui',
+  project: baseDir,
+  out: 'eui.d.ts',
+  resolveModuleId(params) {
+    if (path.basename(params.currentModuleId) === 'index') {
+      // this module is exporting from an `index(.d)?.ts` file, declare its exports straight to @elastic/eui module
+      return '@elastic/eui';
+    } else {
+      // otherwise export as the module's path relative to the @elastic/eui namespace
+      return path.join('@elastic/eui', params.currentModuleId);
+    }
+  },
+  resolveModuleImport(params) {
+    // only intercept relative imports (don't modify node-modules references)
+    const isRelativeImport = params.importedModuleId[0] === '.';
+
+    if (isRelativeImport) {
+      // path to the import target, assuming it's a `.d.ts` file
+      const importTargetDTs = `${path.resolve(srcDir, path.dirname(params.currentModuleId), params.importedModuleId)}.d.ts`;
+
+      // if importing an `index` file
+      const isModuleIndex = path.basename(params.importedModuleId) === 'index';
+
+      if (fs.existsSync(importTargetDTs)) {
+        // the import target is a `.d.ts` file which means it is hand-crafted and already added to the right places, don't modify
+        return path.join('@elastic/eui', params.importedModuleId);
+      } else if (isModuleIndex) {
+        // importing an `index` file, in `resolveModuleId` above we change those modules to '@elastic/eui'
+        return '@elastic/eui';
+      } else {
+        // importing from a non-index TS source file, keep the import path but re-scope it to '@elastic/eui' namespace
+        return path.join(
+          '@elastic/eui',
+          path.dirname(params.currentModuleId),
+          params.importedModuleId
+        );
+      }
+    } else {
+      return params.importedModuleId;
+    }
+  },
+});
+
+// strip any `/// <reference` lines from the generated eui.d.ts
+generator.then(() => {
+  const defsFilePath = path.resolve(baseDir, 'eui.d.ts');
+  fs.writeFileSync(
+    defsFilePath,
+    fs.readFileSync(defsFilePath).toString().replace(/\/\/\/\W+<reference.*/g, '')
+  );
+});

tsconfig.json

@@ -2,28 +2,30 @@
   "compilerOptions": {
     "baseUrl": ".",
 
-    // don't write output, only perform type checking
-    "noEmit": true,
+    // necessary to output declaration files relative to the correct path
+    "rootDir": "./src",
+
+    // emit files to the `types` dir, these are ignored by everything but TS needs _somewhere_ to emit
+    "outDir": "types",
+
+    // generate declaration files
+    "declaration": true,
 
     // don't allow un-used variables
     "noUnusedLocals": true,
 
     // Enables all strict type checking options.
     "strict": true,
 
-    // Use commonjs for node, overridden in webpack to keep import statements
-    // to maintain support for things like `await import()`
-    "module": "commonjs",
+    // Output as ES Modules & esnext code, webpack will handle further conversion
+    "module": "es6",
+    "target": "esnext",
 
     // Allows default imports from modules with no default export. This does not affect code emit, just type checking.
     // We have to enable this option explicitly since `esModuleInterop` doesn't enable it automatically when ES2015 or
     // ESNext module format is used.
     "allowSyntheticDefaultImports": true,
 
-    // Node 8 should support everything output by esnext, we override this
-    // in webpack with loader-level compiler options
-    "target": "esnext",
-
     // Support .tsx files and transform JSX into calls to React.createElement
     "jsx": "react",
 

yarn.lock

@@ -1821,6 +1821,11 @@ block-stream@*:
   dependencies:
     inherits "~2.0.0"
 
+[email protected]:
+  version "3.3.3"
+  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.3.3.tgz#cf96a45d77b9a97a43c46a365c4619f62bf976d0"
+  integrity sha1-z5akXXe5qXpDxGo2XEYZ9iv5dtA=
+
 [email protected]:
   version "3.4.6"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.4.6.tgz#01da8d821d87813d158967e743d5fe6c62cf8c0f"
@@ -3962,6 +3967,15 @@ downgrade-root@^1.0.0:
     default-uid "^1.0.0"
     is-root "^1.0.0"
 
+dts-generator@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/dts-generator/-/dts-generator-2.1.0.tgz#039b87a4f5f847b3b8ef00ddee3eb09545decefe"
+  integrity sha1-A5uHpPX4R7O47wDd7j6wlUXezv4=
+  dependencies:
+    bluebird "3.3.3"
+    glob "7.0.0"
+    mkdirp "0.5.1"
+
 duplexer2@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/duplexer2/-/duplexer2-0.1.4.tgz#8b12dab878c0d69e3e7891051662a32fc6bddcc1"
@@ -5390,6 +5404,17 @@ glob-parent@^3.1.0:
     is-glob "^3.1.0"
     path-dirname "^1.0.0"
 
+[email protected]:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.0.0.tgz#3b20a357fffcf46bb384aed6f8ae9a647fdb6ac4"
+  integrity sha1-OyCjV//89GuzhK7W+K6aZH/basQ=
+  dependencies:
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "2 || 3"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
 [email protected], glob@^7.0.0, glob@^7.0.3, glob@^7.0.5, glob@^7.1.1, glob@^7.1.2, glob@~7.1.1:
   version "7.1.2"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.2.tgz#c19c9df9a028702d678612384a6552404c636d15"