wip: template binding optimization

packages/compiler-sfc/src/compileScript.ts

@@ -1,4 +1,5 @@
 import MagicString from 'magic-string'
+import { BindingMetadata } from '@vue/compiler-core'
 import { SFCDescriptor, SFCScriptBlock } from './parse'
 import { parse, ParserPlugin } from '@babel/parser'
 import { babelParserDefautPlugins, generateCodeFrame } from '@vue/shared'
@@ -28,10 +29,6 @@ export interface SFCScriptCompileOptions {
   babelParserPlugins?: ParserPlugin[]
 }
 
-export interface BindingMetadata {
-  [key: string]: 'data' | 'props' | 'setup' | 'ctx'
-}
-
 let hasWarned = false
 
 /**

packages/compiler-sfc/src/index.ts

@@ -24,9 +24,10 @@ export {
   SFCAsyncStyleCompileOptions,
   SFCStyleCompileResults
 } from './compileStyle'
-export { SFCScriptCompileOptions, BindingMetadata } from './compileScript'
+export { SFCScriptCompileOptions } from './compileScript'
 export {
   CompilerOptions,
   CompilerError,
+  BindingMetadata,
   generateCodeFrame
 } from '@vue/compiler-core'

packages/compiler-sfc/src/parse.ts

@@ -3,17 +3,14 @@ import {
   ElementNode,
   SourceLocation,
   CompilerError,
-  TextModes
+  TextModes,
+  BindingMetadata
 } from '@vue/compiler-core'
 import * as CompilerDOM from '@vue/compiler-dom'
 import { RawSourceMap, SourceMapGenerator } from 'source-map'
 import { generateCodeFrame } from '@vue/shared'
 import { TemplateCompiler } from './compileTemplate'
-import {
-  compileScript,
-  BindingMetadata,
-  SFCScriptCompileOptions
-} from './compileScript'
+import { compileScript, SFCScriptCompileOptions } from './compileScript'
 
 export interface SFCParseOptions extends SFCScriptCompileOptions {
   filename?: string