vue hello world项目
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const { semver } = require('@vue/cli-shared-utils')
/** @param {import('@vue/cli/lib/MigratorAPI')} api MigratorAPI */
module.exports = async (api) => {
const pkg = require(api.resolve('package.json'))
let localESLintRange = pkg.devDependencies.eslint
// if project is scaffolded by Vue CLI 3.0.x or earlier,
// the ESLint dependency (ESLint v4) is inside @vue/cli-plugin-eslint;
// in Vue CLI v4 it should be extracted to the project dependency list.
if (api.fromVersion('^3') && !localESLintRange) {
localESLintRange = '^4.19.1'
api.extendPackage({
devDependencies: {
eslint: localESLintRange,
'@babel/eslint-parser': '^7.12.16',
'eslint-plugin-vue': '^4.5.0'
}
})
}
const localESLintMajor = semver.major(
semver.maxSatisfying(['4.99.0', '5.99.0', '6.99.0', '7.99.0'], localESLintRange) ||
// in case the user does not specify a typical caret range;
// it is used as **fallback** because the user may have not previously
// installed eslint yet, such as in the case that they are from v3.0.x
// eslint-disable-next-line node/no-extraneous-require
require('eslint/package.json').version
)
if (localESLintMajor > 6) {
return
}
const { getDeps } = require('../eslintDeps')
const newDeps = getDeps(api)
if (pkg.devDependencies['@vue/eslint-config-airbnb']) {
Object.assign(newDeps, getDeps(api, 'airbnb'))
}
if (pkg.devDependencies['@vue/eslint-config-standard']) {
Object.assign(newDeps, getDeps(api, 'standard'))
}
if (pkg.devDependencies['@vue/eslint-config-prettier']) {
Object.assign(newDeps, getDeps(api, 'prettier'))
}
const fields = { devDependencies: newDeps }
if (newDeps['@babel/core'] && newDeps['@babel/eslint-parser']) {
Reflect.deleteProperty(api.generator.pkg.devDependencies, 'babel-eslint')
const minSupportedBabelCoreVersion = '>=7.2.0'
const localBabelCoreVersion = pkg.devDependencies['@babel/core']
if (localBabelCoreVersion &&
semver.satisfies(
localBabelCoreVersion,
minSupportedBabelCoreVersion
)) {
Reflect.deleteProperty(newDeps, '@babel/core')
}
fields.eslintConfig = {
parserOptions: {
parser: '@babel/eslint-parser'
}
}
}
api.extendPackage(fields, { warnIncompatibleVersions: false })
// in case anyone's upgrading from the legacy `typescript-eslint-parser`
if (api.hasPlugin('typescript')) {
api.extendPackage({
eslintConfig: {
parserOptions: {
parser: '@typescript-eslint/parser'
}
}
})
}
api.exitLog(`ESLint upgraded from v${localESLintMajor}. to v7\n`)
// TODO:
// transform `@vue/prettier` to `eslint:recommended` + `plugin:prettier/recommended`
// remove `@vue/prettier/@typescript-eslint`
// transform `@vue/typescript` to `@vue/typescript/recommended` and also fix prettier compatibility for it
}