jest + vuejs + vuetify 的意外标识符
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【中文标题】jest + vuejs + vuetify 的意外标识符【英文标题】：Unexpected identifier with jest + vuejs + vuetify 【发布时间】：2019-07-30 22:56:35 【问题描述】：我已经到处寻找答案。我怀疑这是.babelrc 问题，但我找不到有效的答案。
应用程序运行良好，但我发现，Jest 和 Rollup 都真正依赖于 .babelrc。另一个可能的罪魁祸首是传单。在我构建和测试的所有组件中，只有包含 Leaflet 和 vue2-leaflet 的组件似乎有这个问题。考虑到我正在开发地图应用程序，这对我来说至关重要。
我在这里发帖，因为我无法证明任何事情。还有很多其他人也遇到过类似的问题。
终端输出：
nr test:unit
> cxl-vue-leaflet@3.0.1-SNAPSHOT test:unit /Users/dan.mahoney/Projects/cxl-vue-leaflet
> NODE_ENV=testing BABEL_DISABLE_CACHE=1 jest --verbose --no-cache
Determining test suites to run...
# Starting...
# 1 test suites found.
# FAIL src/components/__test__/specs/cxl-vue-leaflet.spec.js
#
# /Users/dan.mahoney/Projects/cxl-vue-leaflet/node_modules/vuetify/lib/index.js:1
#
# ("Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest)import Vuetify from './components/Vuetify';
# ^^^^^^^
#
# SyntaxError: Unexpected identifier
#
# Stack:
#
# at new Script (vm.js:85:7)
1..0
# Test Suites: 0% , 1 failed, 1 total
# Tests: 0 total
# Time: 2.088s
# Ran all test suites.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! cxl-vue-leaflet@3.0.1-SNAPSHOT test:unit: `NODE_ENV=testing BABEL_DISABLE_CACHE=1 jest --verbose --no-cache`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the cxl-vue-leaflet@3.0.1-SNAPSHOT test:unit script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! /Users/dan.mahoney/.npm/_logs/2019-03-08T21_06_53_748Z-debug.log
.babelrc:
"sourceMaps": true,
"presets": [
[
"@babel/preset-env",
]
],
"env":
"test":
"presets": [
[
"env",
"targets":
"node": "current"
]
]
,
"plugins": [
"transform-es2015-modules-commonjs",
["add-module-exports",
"vuetify":
"transform": "vuetify/es5/components/$member",
"preventFullImport": "false"
,
],
]
package.json 中的 Jest 配置：
"jest":
"transformIgnorePatterns": [
"<rootDir>/node_modules/"
],
"moduleFileExtensions": [
"js",
"vue"
],
"moduleNameMapper":
"^@/(.*)$": "<rootDir>/src/$1",
"^.+\\.(css)$": "identity-obj-proxy"
,
"transform":
"^.+\\.js$": "<rootDir>/node_modules/babel-jest",
"^.+\\.vue$": "vue-jest",
".+\\.(css|styl|less|sass|scss|png|jpg|ttf|woff|woff2)$": "jest-transform-stub"
,
"reporters": [
"jest-tap-reporter"
],
"collectCoverageFrom": [
"**/components/*.vue",
"!**/node_modules/**"
]
,
依赖关系：
"dependencies":
"get-value": "^3.0.1",
"leaflet": "^1.4.0",
"leaflet.icon.glyph": "^0.2.0",
"moment": "^2.23.0",
"vue-moment": "^4.0.0",
"vue2-leaflet": "^2.0.2",
"vue2-leaflet-markercluster": "^3.0.0",
"vuetify": "^1.5.5"
,
"devDependencies":
"@babel/core": "^7.3.4",
"@babel/plugin-proposal-object-rest-spread": "^7.3.4",
"@babel/plugin-transform-runtime": "^7.3.4",
"@babel/preset-env": "^7.3.4",
"@vue/cli-service": "^3.5.0",
"@vue/test-utils": "^1.0.0-beta.28",
"babel-core": "^7.0.0-bridge.0",
"babel-eslint": "^10.0.1",
"babel-jest": "^24.3.1",
"babel-plugin-add-module-exports": "^1.0.0",
"babel-plugin-external-helpers": "^6.22.0",
"babel-plugin-source-map-support": "^2.0.1",
"babel-plugin-transform-es2015-modules-commonjs": "^6.26.2",
"babel-plugin-transform-imports": "^1.4.1",
"babel-plugin-transform-object-rest-spread": "^6.26.0",
"chromedriver": "^2.38.3",
"eslint": "^5.15.1",
"eslint-config-airbnb-base": "^13.1.0",
"eslint-config-standard": "^12.0.0",
"eslint-config-strict": "^14.0.1",
"eslint-config-strict-es": "^1.0.4",
"eslint-detailed-reporter": "^0.7.3",
"eslint-import-resolver-webpack": "^0.11.0",
"eslint-loader": "^2.1.0",
"eslint-plugin-html": "^5.0.0",
"eslint-plugin-import": "^2.14.0",
"eslint-plugin-jest": "^22.1.3",
"eslint-plugin-leon-require-jsdoc": "0.0.1",
"eslint-plugin-node": "^8.0.1",
"eslint-plugin-promise": "^4.0.1",
"eslint-plugin-security": "^1.4.0",
"eslint-plugin-standard": "^4.0.0",
"eslint-plugin-vue": "^5.1.0",
"eslint-plugin-vue-a11y": "0.0.28",
"growl": "^1.10.2",
"husky": "^1.3.1",
"identity-obj-proxy": "^3.0.0",
"is-image": "^2.0.0",
"jest": "^24.3.1",
"jest-tap-reporter": "^1.9.0",
"jest-transform-stub": "^2.0.0",
"jest-vue-preprocessor": "^1.5.0",
"jsdoc": "^3.5.5",
"jsdoc-vue": "^1.0.0",
"jsdom": "^13.0.0",
"jsdom-global": "^3.0.2",
"material-design-icons-iconfont": "^4.0.2",
"minimist": "^1.2.0",
"nightwatch": "^1.0.11",
"npm-merge-driver": "^2.3.5",
"parse5": "^5.1.0",
"raf": "^3.4.0",
"require-extension-hooks": "^0.3.2",
"require-extension-hooks-babel": "^0.1.1",
"require-extension-hooks-vue": "^2.0.0",
"rollup": "^1.6.0",
"rollup-plugin-analyzer": "^3.0.0",
"rollup-plugin-babel": "^4.3.0",
"rollup-plugin-babel-minify": "^7.0.0",
"rollup-plugin-commonjs": "^9.1.8",
"rollup-plugin-postcss": "^2.0.1",
"rollup-plugin-replace": "^2.1.0",
"rollup-plugin-vue": "^4.3.2",
"selenium": "^2.20.0",
"stylus": "^0.54.5",
"stylus-loader": "^3.0.1",
"tap-summary": "^4.0.0",
"vue": "^2.6.8",
"vue-jest": "^3.0.4",
"vue-loader": "^15.7.0",
"vue-meta": "^1.5.8",
"vue-template-compiler": "^2.6.8",
"vuepress": "^1.0.0-alpha.42",
"vuepress-jsdoc": "^1.0.3",
"vuetify-loader": "^1.0.8"
,
我真的很茫然。感谢您的帮助。
【问题讨论】：
【参考方案1】：默认情况下，Jest doesn't transform anything in node_modules（vuetify 包所在的位置），但您实际上需要它通过配置的babel-jest 转换运行vuetify，以便可以转译imports。为此，请在 jest.config.js 中使用此配置：
module.exports =
transformIgnorePatterns: [
'<rootDir>/node_modules/(?!vuetify)'
],
...
刚刚提交了一个Pull Request 来记录这个pitfall。
【讨论】：
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