Merge pull request mpvue#8 from WingGao/develop

1. 增加script标签的src支持 2.增加script对ts支持 `lang=ts`这种方式

Author: anchengjian

lib/mp-compiler/index.js

@@ -2,7 +2,11 @@
 const compiler = require('mpvue-template-compiler')
 
 const babel = require('babel-core')
+const path = require('path')
+const fs = require('fs')
+
 const { parseConfig, parseComponentsDeps } = require('./parse')
+const { parseComponentsDeps: parseComponentsDepsTs } = require('./parse-ts')
 const { genScript, genStyle, genPageWxml } = require('./templates')
 
 const {
@@ -93,7 +97,19 @@ function compileWxml (compiled, html) {
 // 处理出当前单文件组件的子组件依赖
 function compileMPScript (script, mpOptioins, moduleId) {
   const babelrc = getBabelrc(mpOptioins.globalBabelrc)
-  const { metadata } = babel.transform(script.content, { extends: babelrc, plugins: [parseComponentsDeps] })
+  let result, metadata
+  let scriptContent = script.content
+  const babelOptions = { extends: babelrc, plugins: [parseComponentsDeps] }
+  if (script.src) { // 处理src
+    const scriptpath = path.join(path.dirname(this.resourcePath), script.src)
+    scriptContent = fs.readFileSync(scriptpath).toString()
+  }
+  if (script.lang === 'ts') { // 处理ts
+    metadata = parseComponentsDepsTs(scriptContent)
+  } else {
+    result = babel.transform(scriptContent, babelOptions)
+    metadata = result.metadata
+  }
 
   // metadata: importsMap, components
   const { importsMap, components: originComponents } = metadata

lib/mp-compiler/parse-ts.js

@@ -0,0 +1,84 @@
+let ts
+try {
+  ts = require('typescript')
+} catch (e) {
+
+}
+
+function parseComponentsDeps (scriptContent) {
+  const sourceFile = ts.createSourceFile('test', scriptContent, ts.ScriptTarget.ESNext, /* setParentNodes */ true)
+  return delint(sourceFile)
+}
+
+function delint (sourceFile) {
+  const compNames = {}
+  const importsMap = {}
+
+  delintNode(sourceFile)
+
+  function parseDecorator (node) {
+    // 只处理 @Component({components:{aaa}})
+    if (node.expression.expression && node.expression.expression.escapedText === 'Component') {
+      const compArgs = node.expression.arguments
+      if (compArgs && compArgs.length === 1) {
+        const vueClassArg = compArgs[0]
+        if (vueClassArg.properties) {
+          vueClassArg.properties.forEach((classProp) => {
+            // 处理components属性
+            if (classProp.name.escapedText === 'components') {
+              classProp.initializer.properties.forEach((comp) => {
+                let compName
+                switch (comp.kind) {
+                  case ts.SyntaxKind.ShorthandPropertyAssignment: // {Comp}
+                    compName = comp.name.escapedText
+                    // report(comp, '1')
+                    break
+                  case ts.SyntaxKind.PropertyAssignment: // {a:Comp}
+                    compName = comp.initializer.escapedText
+                    // report(comp, '2')
+                    break
+                }
+                compNames[compName] = true
+              })
+            }
+          })
+        }
+      }
+    }
+  }
+
+  function delintNode (node) {
+    switch (node.kind) {
+      case ts.SyntaxKind.ImportDeclaration:
+        // 只处理 import Comp from 'xxx.vue'
+        if (node.importClause.name) {
+          importsMap[node.importClause.name.escapedText] = node.moduleSpecifier.text
+        }
+        // report(node, 'import')
+        break
+      case ts.SyntaxKind.Decorator:
+        parseDecorator(node)
+        break
+    }
+
+    ts.forEachChild(node, delintNode)
+  }
+
+  function report(node, message) { // eslint-disable-line
+    const { line, character } = sourceFile.getLineAndCharacterOfPosition(node.getStart())
+    console.log(`${sourceFile.fileName} (${line + 1},${character + 1}): ${message}`)
+  }
+
+  const components = {}
+  for (const k in compNames) {
+    if (importsMap.hasOwnProperty(k)) {
+      components[k] = importsMap[k]
+    }
+  }
+  return {
+    importsMap,
+    components
+  }
+}
+
+module.exports = { parseComponentsDeps }