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const path = require('path')
import { realpathSync } from 'fs'
import { execFileSync, execSync } from 'child_process'
import { declare } from '@babel/helper-plugin-utils'
// import { programVisitor } from './istanlibment'
import { programVisitor } from 'istanbul-lib-instrument'
import TestExclude from 'test-exclude'
import schema from '@istanbuljs/schema'
import parseDiffData from 'parse-diff'
function getRealpath(n) {
try {
return realpathSync(n) || /* istanbul ignore next */ n
} catch (e) {
/* istanbul ignore next */
return n
}
}
const memoize = new Map()
/* istanbul ignore next */
const memosep = path.sep === '/' ? ':' : ';'
function loadNycConfig (cwd, opts) {
let memokey = cwd
const args = [
path.resolve(__dirname, 'load-nyc-config-sync.js'),
cwd
]
if ('nycrcPath' in opts) {
args.push(opts.nycrcPath)
memokey += memosep + opts.nycrcPath
}
/* execFileSync is expensive, avoid it if possible! */
if (memoize.has(memokey)) {
return memoize.get(memokey)
}
const result = JSON.parse(execFileSync(process.execPath, args))
const error = result['load-nyc-config-sync-error']
if (error) {
throw new Error(error)
}
const config = {
...schema.defaults.babelPluginIstanbul,
cwd,
...result
}
memoize.set(memokey, config)
return config
}
function findConfig (opts) {
const cwd = getRealpath(opts.cwd || process.env.NYC_CWD || /* istanbul ignore next */ process.cwd())
const keys = Object.keys(opts)
const ignored = Object.keys(opts).filter(s => s === 'nycrcPath' || s === 'cwd')
if (keys.length > ignored.length) {
// explicitly configuring options in babel
// takes precedence.
return {
...schema.defaults.babelPluginIstanbul,
cwd,
...opts
}
}
if (ignored.length === 0 && process.env.NYC_CONFIG) {
// defaults were already applied by nyc
return JSON.parse(process.env.NYC_CONFIG)
}
return loadNycConfig(cwd, opts)
}
function makeShouldSkip () {
let exclude
return function shouldSkip (file, nycConfig) {
if (!exclude || (exclude.cwd !== nycConfig.cwd)) {
exclude = new TestExclude({
cwd: nycConfig.cwd,
include: nycConfig.include,
exclude: nycConfig.exclude,
extension: nycConfig.extension,
// Make sure this is true unless explicitly set to `false`. `undefined` is still `true`.
excludeNodeModules: nycConfig.excludeNodeModules !== false
})
}
return !exclude.shouldInstrument(file)
}
}
export default declare(api => {
api.assertVersion(7)
const shouldSkip = makeShouldSkip()
const t = api.types
return {
visitor: {
Program: {
enter(path) {
// 筛选后的数据增量文件
let diffScreen = null
this.__dv__ = null
this.nycConfig = findConfig(this.opts)
const realPath = getRealpath(this.file.opts.filename)
const { instrmenttation } = this.nycConfig // npm引入参数
let IS_PITCHING_PILE_DATA = false
let INCREMENT_DATA = false
let BRANCH_DATA = 'origin/master'
let processData = {}
Object.keys(process.env).forEach(item => {
let isItem =
typeof process.env[item] === 'string' ? Boolean(process.env[item]) : process.env[item]
if (item.indexOf('INCREMENT')) {
processData.INCREMENT = isItem
}
if (item.indexOf('IS_PITCHING_PILE')) {
processData.IS_PITCHING_PILE = isItem
}
if (item.indexOf('PROSRC')) {
processData.PROSRC = process.env[item]
}
// Object.keys(processData).length
})
// 全局变量优先
if (Object.keys(processData).length) {
BRANCH_DATA = processData.BRANCH
INCREMENT_DATA = processData.INCREMENT
IS_PITCHING_PILE_DATA = processData.IS_PITCHING_PILE
} else if (Object.keys(instrmenttation).length) {
BRANCH_DATA = instrmenttation.BRANCH
INCREMENT_DATA = instrmenttation.INCREMENT
IS_PITCHING_PILE_DATA = instrmenttation.IS_PITCHING_PILE
}
// instrumenttation (branch: git diff 跟那个分支对比, increment 是否开启增量代码检测) 拿配置到底是全量代码还是增量代码
if (!IS_PITCHING_PILE_DATA) {
return
}
// const changeList = []
// 下面的是零时的
// const gitDiffCode = execSync(`git diff ${branch}`)
// const diffData = parseDiffData(gitDiffCode.toString())
// diffScreen = diffData.find(item => {
// return realPath.indexOf(item.to) > -1
// })
// 后面解开
if (INCREMENT_DATA && BRANCH_DATA) {
const gitDiffCode = execSync(`git diff ${BRANCH_DATA}`)
const diffData = parseDiffData(gitDiffCode.toString())
diffScreen = diffData.find(item => {
return realPath.indexOf(item.to) > -1
})
}
if (shouldSkip(realPath, this.nycConfig)) {
return
}
let { inputSourceMap } = this.opts
if (this.opts.useInlineSourceMaps) {
if (!inputSourceMap && this.file.inputMap) {
inputSourceMap = this.file.inputMap.sourcemap
}
}
const visitorOptions = {}
Object.entries(schema.defaults.instrumentVisitor).forEach(([name, defaultValue]) => {
if (name in this.nycConfig) {
visitorOptions[name] = this.nycConfig[name]
} else {
visitorOptions[name] = schema.defaults.instrumentVisitor[name]
}
})
// 后增加|| !increment这个条件判断条件后面加上
// if (diffScreen !== null && increment) {
// if (diffScreen) {
// if (Array.isArray(diffScreen && diffScreen.chunks)) {
// diffScreen.chunks.forEach(item => {
// let changes = Array.isArray(item.changes) ? item.changes : []
// changes.forEach(items => {
// if (items && items.add) {
// changeList.push(items.ln)
// }
// })
// })
// }
// changeList
this.__dv__ = programVisitor(t, realPath, {
...visitorOptions,
inputSourceMap
})
this.__dv__.enter(path)
// } else {
// this.__dv__ = programVisitor(t, realPath, {
// ...visitorOptions,
// inputSourceMap
// })
// this.__dv__.enter(path)
// }
},
exit(path) {
if (!this.__dv__) {
return
}
const result = this.__dv__.exit(path)
if (this.opts.onCover) {
this.opts.onCover(getRealpath(this.file.opts.filename), result.fileCoverage)
}
}
}
}
}
})
// 增量代码babel引入方法 babel.js 或 babel.config.js
// 'plugins': [
// ['@hliang/babel-plugin-transfrom-modules-commonjs', {
// extension: ['.js', '.vue'],
// instrmenttation: {
// increment: true, // 是否全量插桩
// branch: 'origin/master' // 对比分支
// }
// }]
// ]