我正在尝试使用React创建我的库,并在本地(通过我的公司git存储库)使用它。
在使用npm run start
开发时,我可以测试我的应用程序。我的应用正在运行。
但是当我想在其他项目中使用它时,出现此错误:
./node_modules/mylib/src/views/calendar.jsx中的错误 模块解析失败:意外令牌(10:53) 您可能需要适当的加载程序来处理此文件类型。
涉及的行是:
const Calendar = ({ month = moment(), dayCellTitle = <DayCellTitle />, header = <CalendarHeader/>, children }) => {
这样导入软件包:
"mylib": "git+ssh://git@gitlab.mycompany.ch:mylib/mylib.git"
我尝试了this,但是我变得更糟了:
插件/预设文件不允许导出对象,只能导出功能。 在 /home/xxxxx/Documents/workspaces/react-calendar/node_modules/babel-preset-stage-0/lib/index.js
这是我的包裹中的文件:
webpack.config.js
const path = require('path');
const pkg = require('./package.json');
const libraryName= pkg.name;
module.exports = {
output: {
path: path.join(__dirname, './dist'),
filename: 'react-calendar.js',
library: libraryName,
libraryTarget: 'umd',
publicPath: '/dist/',
umdNamedDefine: true
},
module: {
rules: [
{ test: /\.(js|jsx)$/,
exclude: /node_modules/,
use: ['babel-loader']
}
]
},
resolve: {
alias: {
'react': path.resolve(__dirname, './node_modules/react'),
'react-dom': path.resolve(__dirname, './node_modules/react-dom'),
}
},
externals: {
// Don't bundle react or react-dom
react: {
commonjs: "react",
commonjs2: "react",
amd: "React",
root: "React"
},
"react-dom": {
commonjs: "react-dom",
commonjs2: "react-dom",
amd: "ReactDOM",
root: "ReactDOM"
}
}
};
package.json
{
"name": "react-calendar",
"version": "0.0.1",
"description": "React Calendar UI by",
"main": "./dist/lib/index.js",
"scripts": {
"start": "./node_modules/.bin/parcel docs/index.html",
"build": "./node_modules/.bin/webpack --mode=production",
"build:docs": "./node_modules/.bin/parcel build docs/index.js -d ./dist/docs && cp docs/index.html dist/docs/index.html",
"test": "jest",
"tdd": "jest --watch"
},
"author": "Xero",
"license": "MIT",
"dependencies": {
"lodash": "^4.17.11",
"mobx": "^5.9.0",
"mobx-react": "^5.4.3",
"moment": "^2.24.0",
"moment-range": "^4.0.1",
"react": "^16.2.0",
"react-dom": "^16.2.0",
"semantic-ui-css": "^2.4.1",
"semantic-ui-react": "^0.85.0",
"settings": "^0.1.1"
},
"peerDependencies": {
"lodash": "^4.17.11",
"mobx": "^5.9.0",
"mobx-react": "^5.4.3",
"moment": "^2.24.0",
"moment-range": "^4.0.1",
"react": "^16.2.0",
"react-dom": "^16.2.0",
"semantic-ui-css": "^2.4.1",
"semantic-ui-react": "^0.85.0",
"settings": "^0.1.1"
},
"devDependencies": {
"@babel/core": "^7.0.0-0",
"@babel/plugin-proposal-class-properties": "^7.3.0",
"@babel/plugin-proposal-decorators": "^7.3.0",
"@babel/preset-env": "^7.3.1",
"@babel/preset-react": "^7.0.0",
"babel-loader": "^8.0.5",
"babel-plugin-module-resolver": "^3.1.3",
"babel-plugin-transform-class-properties": "^6.24.1",
"babel-preset-env": "^1.7.0",
"babel-preset-react": "^6.24.1",
"enzyme": "^3.8.0",
"enzyme-adapter-react-16": "^1.9.1",
"jest": "^24.1.0",
"parcel-bundler": "^1.6.2",
"react-test-renderer": "^16.8.0",
"webpack": "^4.1.1",
"webpack-cli": "^2.0.12",
"webpack-node-externals": "^1.6.0"
},
"jest": {
"moduleNameMapper": {
"\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "<rootDir>/spec/javascript/__mocks__/fileMock.js",
"\\.(css|scss|less)$": "<rootDir>/spec/javascript/__mocks__/styleMock.js"
},
"roots": [
"src",
"tests"
],
"moduleFileExtensions": [
"js",
"jsx"
],
"moduleDirectories": [
"node_modules",
"src"
],
"setupFiles": [
"<rootDir>/tests/setup.js"
]
}
}
.babelrc
{
"presets": ["@babel/preset-env", "@babel/preset-react",],
"plugins": [
["@babel/plugin-proposal-decorators", { "legacy": true }],
["@babel/plugin-proposal-class-properties", { "loose": true }]
]
}
侧面问题:
在其他项目中进行导入之前,是否有办法知道是否可以正确导入该库
修改
我已将yarn run build
添加到我的package.json中,并且启动它不会引起任何错误:
Entrypoint main [big] = react-calendar.js
[45] (webpack)/buildin/module.js 497 bytes {0} [built]
[48] (webpack)/buildin/global.js 472 bytes {0} [built]
[244] ./node_modules/moment/locale sync ^\.\/.*$ 3 KiB {0} [optional] [built]
[368] ./src/index.js + 52 modules 182 KiB {0} [built]
| ./src/index.js 65 bytes [built]
| ./src/views/calendar.jsx 1.17 KiB [built]
| ./src/views/day_cell_title.jsx 358 bytes [built]
| ./src/views/calendar_header.jsx 1.15 KiB [built]
| ./src/store/calendar_store.js 3.85 KiB [built]
| ./src/views/calendar_grid.jsx 1.49 KiB [built]
| ./src/views/calendar_navigation_button.jsx 928 bytes [built]
| ./src/views/calendar_title.jsx 290 bytes [built]
| ./src/generators/month_generator.js 556 bytes [built]
| ./src/painters/day_cell_color.js 593 bytes [built]
| ./src/views/day_cell_content.jsx 547 bytes [built]
| ./src/settings.js 332 bytes [built]
| ./src/painters/event_color.js 374 bytes [built]
| ./src/painters/range_color.js 591 bytes [built]
| ./src/views/empty_day_cell_content.jsx 340 bytes [built]
| + 38 hidden modules
+ 743 hidden modules
答案 0 :(得分:2)
您正在重新分发包含JSX语法的源。通常,在发布之前,您需要对它们进行转换。如果不是这样,那么您的家属将需要为他们的babel-loader
配置React支持,并确保他们没有排除您的包模块。
因此,除了排除匹配项,您的配置看起来还不错:
module: {
rules: [
{ test: /\.(js|jsx)$/,
exclude: /node_modules/,
use: ['babel-loader']
}
]
}
我建议您使用{ include }
并列出应明确匹配的路径。要查找软件包源所在的路径,请使用path.dirname(require.resolve('@yours/package-name'))
。
答案 1 :(得分:1)
您的npm run start
脚本似乎使用了parcel
,而不是webpack
,我想webpack.config.js
根本不会影响它?也许您应该确保parcel
确实启动了正确的加载程序。
"start": "./node_modules/.bin/parcel docs/index.html", // <- invokes parcel bundler
"build": "./node_modules/.bin/webpack --mode=production",
尝试npm run build
,如果成功,那就完全可以了。
答案 2 :(得分:1)
问题是两件事:
我没有建立项目(使用yarn run build
),最重要的是,我没有提交已编译的文件(dist/main.js
)
鉴于要点1.,我的输入错误。
我在做:
import {Calendar} from "project-react-calendar/src/views/calendar";
而不是:
import {Calendar} from "project-react-calendar";
可以使用index.js
来实现:
import { Calendar } from './views/calendar'
export {
Calendar
}