feat: merge define

packages/uni-cli-shared/__tests__/examples/custom-scripts/package.json

+{
+  "uni-app": {
+    "scripts": {
+      "H5-WEIXIN": {
+        "title": "H5-WEIXIN",
+        "env": {
+          "UNI_PLATFORM": "H5"
+        },
+        "define": {
+          "H5-BASE": true,
+          "H5-WEIXIN": true
+        }
+      },
+      "H5-QQ": {
+        "title": "H5-QQ",
+        "env": {
+          "UNI_PLATFORM": "H5"
+        },
+        "define": {
+          "H5-BASE": false,
+          "H5-QQ": true
+        }
+      }
+    }
+  }
+}

packages/uni-cli-shared/__tests__/scripts.spec.ts

+import path from 'path'
+import { parseScripts } from '../src/scripts'
+
+describe('filter', () => {
+  test(`basic`, () => {
+    const pkgPath = path.resolve(
+      __dirname,
+      'examples/custom-scripts/package.json'
+    )
+    expect(parseScripts('H5-WEIXIN', pkgPath)).toEqual({
+      name: 'H5-WEIXIN',
+      platform: 'H5',
+      define: {},
+      context: { 'H5-BASE': true, 'H5-WEIXIN': true, 'H5-QQ': false },
+    })
+    expect(parseScripts('H5-QQ', pkgPath)).toEqual({
+      name: 'H5-QQ',
+      platform: 'H5',
+      define: {},
+      context: { 'H5-BASE': false, 'H5-QQ': true, 'H5-WEIXIN': false },
+    })
+  })
+})

packages/uni-cli-shared/src/scripts.ts

+import { hasOwn } from '@vue/shared'
 import fs from 'fs'
 
 interface Package {
@@ -24,7 +25,8 @@ export function parseScripts(name: string, pkgPath: string) {
   }
   const pkg = JSON.parse(fs.readFileSync(pkgPath, 'utf8')) as Package
 
-  const options = pkg['uni-app']?.scripts?.[name]
+  const scripts = pkg['uni-app']?.scripts || {}
+  const options = scripts[name]
   if (!options) {
     return
   }
@@ -35,10 +37,22 @@ export function parseScripts(name: string, pkgPath: string) {
     process.exit(0)
   }
   const { UNI_PLATFORM, ...define } = options.env
+  const context = options.define || {}
+  // 补充当前编译环境未定义的其他编译环境 define
+  Object.keys(scripts).forEach((scriptName) => {
+    if (scriptName !== name) {
+      const scriptDefine = scripts[scriptName].define || {}
+      Object.keys(scriptDefine).forEach((key) => {
+        if (!hasOwn(context, key)) {
+          context[key] = false
+        }
+      })
+    }
+  })
   return {
     name: name,
     platform: UNI_PLATFORM,
     define,
-    context: options.define || {},
+    context,
   }
 }