npm run eject之后（为了更改webpack.config，这是必需的），在应用编译期间我遇到了以下问题：Cannot find module 'babel-plugin-transform-decorators-legacy'。
我尝试了以下描述的多种变体： Cannot find module '@babel/plugin-transform-react-jsx-source' when running React App
（最流行的方法之一是删除节点模块，然后再次执行yarn install-没有帮助）
如何解决该问题？
这是我的.babelrc文件：
{
"presets": [
[
"es2015",
{
"modules": false
}
],
"react",
"stage-2",
"react-app",
"babel-preset-expo"
],
"plugins": [
"syntax-dynamic-import",
"transform-decorators-legacy",
"transform-object-rest-spread",
"react-hot-loader/babel"
],
"env": {
"test": {
"plugins": [
"transform-decorators-legacy",
"transform-object-rest-spread",
"istanbul"
]
}
}
}
还有我的package.json：
{
"name": "maperclip-react",
"version": "3.0.2",
"private": true,
"proxy": "http://maperclip-server:3001",
"scripts": {
"start": "node scripts/start.js",
"build": "node scripts/build.js",
"test": "node scripts/test.js",
"lint": "./node_modules/.bin/eslint ."
},
"dependencies": {
"@amcharts/amcharts4": "^4.4.10",
"@amcharts/amcharts4-geodata": "^4.1.5",
"@babel/core": "7.6.0",
"@babel/plugin-transform-react-jsx": "^7.7.0",
"@babel/runtime": "^7.4.5",
"@date-io/moment": "^1.3.6",
"@material-ui/core": "^4.0.2",
"@material-ui/icons": "^4.0.1",
"@material-ui/styles": "^4.0.2",
"@svgr/webpack": "4.3.2",
"@typescript-eslint/eslint-plugin": "^2.2.0",
"@typescript-eslint/parser": "^2.2.0",
"array-move": "^2.1.0",
"autosuggest-highlight": "^3.1.1",
"axios": "^0.19.0",
"babel-eslint": "10.0.3",
"babel-jest": "^24.9.0",
"babel-loader": "8.0.6",
"babel-plugin-named-asset-import": "^0.3.4",
"babel-preset-react-app": "^9.0.2",
"babel-preset-stage-2": "^6.24.1",
"bootstrap": "^4.3.1",
"bootstrap-v4-rtl": "^4.3.1-3",
"bpmn-js": "^4.0.4",
"camelcase": "^5.2.0",
"can-use-dom": "^0.1.0",
"case-sensitive-paths-webpack-plugin": "2.2.0",
"chart.js": "^2.8.0",
"classnames": "^2.2.6",
"connected-react-router": "^6.4.0",
"cross-env": "^5.2.0",
"css-loader": "2.1.1",
"dotenv": "6.2.0",
"dotenv-expand": "5.1.0",
"dotenv-webpack": "^1.7.0",
"downshift": "^3.2.10",
"draft-js": "^0.10.5",
"draftjs-to-html": "^0.8.4",
"eslint": "^6.1.0",
"eslint-config-airbnb": "^17.1.1",
"eslint-config-react-app": "^5.0.2",
"eslint-loader": "3.0.2",
"eslint-plugin-flowtype": "3.13.0",
"eslint-plugin-import": "2.18.2",
"eslint-plugin-jsx-a11y": "6.2.3",
"eslint-plugin-react": "7.14.3",
"eslint-plugin-react-hooks": "^1.6.1",
"file-loader": "3.0.1",
"firebase": "^6.1.0",
"fs-extra": "7.0.1",
"history": "^4.9.0",
"html-webpack-plugin": "4.0.0-beta.5",
"identity-obj-proxy": "3.0.0",
"install": "^0.12.2",
"is-wsl": "^1.1.0",
"isomorphic-fetch": "^2.2.1",
"jest": "24.9.0",
"jest-environment-jsdom-fourteen": "0.1.0",
"jest-resolve": "24.9.0",
"jest-watch-typeahead": "0.4.0",
"jquery": "^3.4.1",
"jquery-ui": "^1.12.1",
"jss-rtl": "^0.2.3",
"material-ui-pickers": "^2.2.4",
"mini-css-extract-plugin": "0.8.0",
"moment": "^2.24.0",
"node-sass": "^4.12.0",
"nprogress": "^0.2.0",
"optimize-css-assets-webpack-plugin": "5.0.3",
"path": "^0.12.7",
"pnp-webpack-plugin": "1.5.0",
"postcss-flexbugs-fixes": "4.1.0",
"postcss-loader": "3.0.0",
"postcss-normalize": "7.0.1",
"postcss-preset-env": "6.7.0",
"postcss-safe-parser": "4.0.1",
"prettier": "^1.17.1",
"prop-types": "^15.7.2",
"react": "^16.8.6",
"react-app-polyfill": "^1.0.4",
"react-autosuggest": "^9.4.3",
"react-big-calendar": "^0.21.0",
"react-bootstrap-sweetalert": "^4.4.1",
"react-chartjs-2": "^2.7.6",
"react-circular-progressbar": "^2.0.1",
"react-ckeditor-component": "^1.1.0",
"react-color": "^2.17.3",
"react-custom-scrollbars": "^4.2.1",
"react-d3-speedometer": "^0.5.5",
"react-dev-utils": "^9.1.0",
"react-device-detect": "^1.6.2",
"react-dnd": "^7.4.5",
"react-dnd-html5-backend": "^7.4.4",
"react-dom": "^16.8.6",
"react-draft-wysiwyg": "^1.13.2",
"react-dropzone": "^10.1.5",
"react-google-maps": "^9.4.5",
"react-hot-loader": "^4.9.0",
"react-icons": "^3.7.0",
"react-intl": "^2.9.0",
"react-joyride": "^2.0.5",
"react-jvectormap": "^0.0.12",
"react-load-script": "^0.0.6",
"react-loadable": "^5.5.0",
"react-notifications": "^1.4.3",
"react-number-format": "^4.0.8",
"react-placeholder": "^3.0.2",
"react-redux": "^7.0.3",
"react-router": "^5.0.1",
"react-router-dom": "^5.0.1",
"react-select": "^3.0.4",
"react-simple-maps": "^0.12.1",
"react-slick": "^0.24.0",
"react-sortable-hoc": "^1.9.1",
"react-star-rating-component": "^1.4.1",
"react-swipeable-views": "^0.13.3",
"react-text-mask": "^5.4.3",
"reactstrap": "^8.0.0",
"recharts": "^1.6.2",
"recompose": "^0.30.0",
"redux": "^4.0.1",
"redux-logger": "^3.0.6",
"redux-saga": "^1.0.2",
"resolve": "1.12.0",
"resolve-url-loader": "3.1.0",
"sass-loader": "7.2.0",
"save": "^2.4.0",
"semver": "6.3.0",
"slick-carousel": "^1.8.1",
"style-loader": "1.0.0",
"terser-webpack-plugin": "1.4.1",
"ts-pnp": "1.1.4",
"typeface-roboto": "^0.0.54",
"url-loader": "2.1.0",
"url-search-params": "^1.1.0",
"uuid": "^3.3.3",
"webpack": "4.41.0",
"webpack-dev-server": "3.2.1",
"webpack-manifest-plugin": "2.1.1",
"workbox-webpack-plugin": "4.3.1"
},
"eslintConfig": {
"extends": "react-app"
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
},
"jest": {
"roots": [
"<rootDir>/src"
],
"collectCoverageFrom": [
"src/**/*.{js,jsx,ts,tsx}",
"!src/**/*.d.ts"
],
"setupFiles": [
"react-app-polyfill/jsdom"
],
"setupFilesAfterEnv": [],
"testMatch": [
"<rootDir>/src/**/__tests__/**/*.{js,jsx,ts,tsx}",
"<rootDir>/src/**/*.{spec,test}.{js,jsx,ts,tsx}"
],
"testEnvironment": "jest-environment-jsdom-fourteen",
"transform": {
"^.+\\.(js|jsx|ts|tsx)$": "<rootDir>/node_modules/babel-jest",
"^.+\\.css$": "<rootDir>/config/jest/cssTransform.js",
"^(?!.*\\.(js|jsx|ts|tsx|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
},
"transformIgnorePatterns": [
"[/\\\\]node_modules[/\\\\].+\\.(js|jsx|ts|tsx)$",
"^.+\\.module\\.(css|sass|scss)$"
],
"modulePaths": [
"/Users/ivan/MyCubes/MaperClip_Athlon/Maperclip/client_react/src"
],
"moduleNameMapper": {
"^react-native$": "react-native-web",
"^.+\\.module\\.(css|sass|scss)$": "identity-obj-proxy"
},
"moduleFileExtensions": [
"web.js",
"js",
"web.ts",
"ts",
"web.tsx",
"tsx",
"json",
"web.jsx",
"jsx",
"node"
],
"watchPlugins": [
"jest-watch-typeahead/filename",
"jest-watch-typeahead/testname"
]
}
}
更新
我还完成了yarn add babel-plugin-transform-decorators-legacy-没用。
答案 0 :(得分：2)
您正在使用@babel v7，但是babel-plugin-transform-decorators-legacy是babel 6的插件。
您应该使用@babel/plugin-proposal-decorators。
更多信息，https://www.npmjs.com/package/babel-plugin-transform-decorators-legacy
(...)
"plugins": [
"syntax-dynamic-import",
["@babel/plugin-proposal-decorators", { "legacy": true }],
"@babel/plugin-proposal-object-rest-spread",
"react-hot-loader/babel"
]
(...)
和
npm i @babel/plugin-proposal-object-rest-spread @babel/plugin-proposal-decorators