feat: support ts from env and pkg

bootstrap.js

@@ -5,7 +5,6 @@ const mock = require('./index').default;
 
 const options = {};
 if (process.env.EGG_BASE_DIR) options.baseDir = process.env.EGG_BASE_DIR;
-if (process.env.EGG_TYPESCRIPT) options.typescript = process.env.EGG_TYPESCRIPT;
 const app = mock.app(options);
 
 before(() => app.ready());

lib/format_options.js

@@ -1,5 +1,6 @@
 'use strict';
 
+const fs = require('fs');
 const path = require('path');
 const mm = require('mm');
 const debug = require('debug')('mm');
@@ -39,6 +40,21 @@ module.exports = function formatOptions(options) {
   }
   options.customEgg = options.framework = framework;
 
+  // typescript
+  if (!options.hasOwnProperty('typescript')) {
+    if (process.env.EGG_TYPESCRIPT) {
+      options.typescript = Boolean(process.env.EGG_TYPESCRIPT);
+    } else {
+      const pkgFile = path.join(options.baseDir, 'package.json');
+      if (fs.existsSync(pkgFile)) {
+        const pkgInfo = require(pkgFile);
+        if (pkgInfo && pkgInfo.egg && pkgInfo.egg.typescript) {
+          options.typescript = true;
+        }
+      }
+    }
+  }
+
   const plugins = options.plugins = options.plugins || {};
 
   // add self as a plugin

test/fixtures/ts/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "ts",
+  "egg": {
+    "typescript": true
+  }
+}

test/format_options.test.js

@@ -153,4 +153,19 @@ describe('test/format_options.test.js', () => {
     formatOptions();
     assert.notEqual(process.env.HOME, baseDir);
   });
+
+  it('should read egg.typescript', () => {
+    const baseDir = path.join(__dirname, 'fixtures/ts');
+    mm(process, 'cwd', () => baseDir);
+    const opts = formatOptions();
+    assert(opts.typescript === true);
+  });
+
+  it('should read process.env.EGG_TYPESCRIPT', () => {
+    const baseDir = path.join(__dirname, 'fixtures/demo');
+    mm(process, 'cwd', () => baseDir);
+    mm(process.env, 'EGG_TYPESCRIPT', true);
+    const opts = formatOptions();
+    assert(opts.typescript === true);
+  });
 });