feat: allow/require compiler to be passed in for parse

BREAKING CHANGE: vue template compiler must now be passed to `parse`
via options.

README.md

@@ -6,16 +6,26 @@ This package contains lower level utilities that you can use if you are writing
 
 The API surface is intentionally minimal - the goal is to reuse as much as possible while being as flexible as possible.
 
+## Why isn't `vue-template-compiler` a peerDependency?
+
+Since this package is more often used as a low-level utility, it is usually a transitive dependency in an actual Vue project. It is therefore the responsibility of the higher-level package (e.g. `vue-loader`) to inject `vue-template-compiler` via options when calling the `parse` and `compileTemplate` methods.
+
+Not listing it as a peer depedency also allows tooling authors to use a non-default template compiler instead of `vue-template-compiler` without having to include it just to fullfil the peer dep requirement.
+
 ## API
 
 ### parse(ParseOptions): SFCDescriptor
 
-Parse raw single file component source into a descriptor with source maps.
+Parse raw single file component source into a descriptor with source maps. The actual compiler (`vue-template-compiler`) must be passed in via the `compiler` option so that the specific version used can be determined by the end user.
 
 ``` ts
 interface ParseOptions {
   source: string
   filename?: string
+  compiler: VueTemplateCompiler
+  // https://github.com/vuejs/vue/tree/dev/packages/vue-template-compiler#compilerparsecomponentfile-options
+  // defualt: { pad: 'line' }
+  compilerParseOptions?: VueTemplateCompilerParseOptions
   sourceRoot?: string
   needMap?: boolean
 }
@@ -46,7 +56,7 @@ interface SFCBlock extends SFCCustomBlock {
 
 ### compileTemplate(TemplateCompileOptions): TemplateCompileResults
 
-Takes raw template source and compile it into JavaScript code. The actual compiler (`vue-template-compiler`) must be passed so that the specific version used can be determined by the end user.
+Takes raw template source and compile it into JavaScript code. The actual compiler (`vue-template-compiler`) must be passed in via the `compiler` option so that the specific version used can be determined by the end user.
 
 It can also optionally perform pre-processing for any templating engine supported by [consolidate](https://github.com/tj/consolidate.js/).
 
@@ -55,8 +65,9 @@ interface TemplateCompileOptions {
   source: string
   filename: string
 
-  // See https://github.com/vuejs/vue/tree/dev/packages/vue-template-compiler
   compiler: VueTemplateCompiler
+  https://github.com/vuejs/vue/tree/dev/packages/vue-template-compiler#compilercompiletemplate-options
+  // default: {}
   compilerOptions?: VueTemplateCompilerOptions
 
   // Template preprocessor

lib/parse.ts

@@ -1,8 +1,11 @@
-import { RawSourceMap } from './types'
+import {
+  RawSourceMap,
+  VueTemplateCompiler,
+  VueTemplateCompilerParseOptions
+} from './types'
 
 const hash = require('hash-sum')
 const cache = require('lru-cache')(100)
-const compiler = require('vue-template-compiler')
 const { SourceMapGenerator } = require('source-map')
 
 const splitRE = /\r?\n/g
@@ -11,6 +14,8 @@ const emptyRE = /^(?:\/\/)?\s*$/
 export interface ParseOptions {
   source: string
   filename?: string
+  compiler: VueTemplateCompiler
+  compilerParseOptions?: VueTemplateCompilerParseOptions
   sourceRoot?: string
   needMap?: boolean
 }
@@ -42,13 +47,15 @@ export function parse(options: ParseOptions): SFCDescriptor {
   const {
     source,
     filename = '',
+    compiler,
+    compilerParseOptions = { pad: 'line' },
     sourceRoot = process.cwd(),
     needMap = true
   } = options
   const cacheKey = hash(filename + source)
   let output: SFCDescriptor = cache.get(cacheKey)
   if (output) return output
-  output = compiler.parseComponent(source, { pad: 'line' })
+  output = compiler.parseComponent(source, compilerParseOptions)
   if (needMap) {
     if (output.script && !output.script.src) {
       output.script.map = generateSourceMap(

lib/types.ts

@@ -1,3 +1,5 @@
+import { SFCDescriptor } from './parse'
+
 export interface StartOfSourceMap {
   file?: string;
   sourceRoot?: string;
@@ -12,6 +14,11 @@ export interface RawSourceMap extends StartOfSourceMap {
 }
 
 export interface VueTemplateCompiler {
+  parseComponent(
+    source: string,
+    options?: any
+  ): SFCDescriptor
+
   compile(
     template: string,
     options: VueTemplateCompilerOptions
@@ -30,6 +37,10 @@ export interface VueTemplateCompilerOptions {
   modules?: Object[]
 }
 
+export interface VueTemplateCompilerParseOptions {
+  pad?: 'line' | 'space'
+}
+
 export interface VueTemplateCompilerResults {
   ast: Object | void
   render: string

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vue/component-compiler-utils",
-  "version": "1.3.1",
+  "version": "1.4.0",
   "description": "Lower level utilities for compiling Vue single file components",
   "main": "dist/index.js",
   "typings": "dist/index.d.ts",
@@ -48,8 +48,5 @@
     "prettier": "^1.13.0",
     "source-map": "^0.5.6",
     "vue-template-es2015-compiler": "^1.6.0"
-  },
-  "peerDependencies": {
-    "vue-template-compiler": "^2.0.0"
   }
 }

test/compileStyle.spec.ts

@@ -1,5 +1,6 @@
 import { parse } from '../lib/parse'
 import { compileStyle, compileStyleAsync } from '../lib/compileStyle'
+import * as compiler from 'vue-template-compiler'
 
 test('preprocess less', () => {
   const style = parse({
@@ -8,6 +9,7 @@ test('preprocess less', () => {
       '@red: rgb(255, 0, 0);\n' +
       '.color { color: @red; }\n' +
       '</style>\n',
+    compiler,
     filename: 'example.vue',
     needMap: true
   }).styles[0]
@@ -32,6 +34,7 @@ test('preprocess scss', () => {
       '$red: rgb(255, 0, 0);\n' +
       '.color { color: $red; }\n' +
       '</style>\n',
+    compiler,
     filename: 'example.vue',
     needMap: true
   }).styles[0]
@@ -57,6 +60,7 @@ test('preprocess sass', () => {
       '.color\n' +
       '   color: $red\n' +
       '</style>\n',
+    compiler,
     filename: 'example.vue',
     needMap: true
   }).styles[0]
@@ -82,6 +86,7 @@ test('preprocess stylus', () => {
       '.color\n' +
       '   color: red-color\n' +
       '</style>\n',
+    compiler,
     filename: 'example.vue',
     needMap: true
   }).styles[0]
@@ -101,7 +106,7 @@ test('preprocess stylus', () => {
 
 test('custom postcss plugin', () => {
   const spy = jest.fn()
-  
+
   compileStyle({
     id: 'v-scope-xxx',
     filename: 'example.vue',
@@ -148,7 +153,7 @@ test('async postcss plugin', async () => {
   })
 
   expect(promise instanceof Promise).toBe(true)
-  
+
   const result = await promise
   expect(result.errors).toHaveLength(0)
   expect(result.code).toEqual(expect.stringContaining('color: red'))

test/compileTemplate.spec.ts

@@ -11,6 +11,7 @@ test('preprocess pug', () => {
       ' div.container\n' +
       '   p Cool Pug example!\n' +
       '</template>\n',
+    compiler,
     filename: 'example.vue',
     needMap: true
   }).template
@@ -30,6 +31,7 @@ test('warn missing preprocessor', () => {
     source:
       '<template lang="unknownLang">\n' +
       '</template>\n',
+    compiler,
     filename: 'example.vue',
     needMap: true
   }).template
@@ -42,4 +44,4 @@ test('warn missing preprocessor', () => {
   })
 
   expect(result.errors.length).toBe(1)
-})
+})