![](/img/trans.png)
[英]Webpack module parse failed warning with .svg files and custom config
[英]Webpack Module Warning: Failed to parse source map from "data" URL
我收到了一个糟糕的警告,并且一直无法找到可用的解决方案:
WARNING in ../lensing/dist/main.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from "data" URL: data:application/json;charset=utf-8;base64,eyJ2ZXJza [...]
我的 webpack.config.js 看起来像(npm 模块的设置):
module.exports = {
entry: './src/index.js',
output: {
filename: 'main.js',
path: path.resolve(__dirname, 'dist'),
library: 'lensing',
libraryTarget: 'umd',
umdNamedDefine: true
},
module: {
rules: [
{
test: /\.m?js$/,
exclude: /(node_modules|bower_components)/,
use: {
loader: 'babel-loader',
options: {
presets: ['@babel/preset-env'],
plugins: [
'@babel/plugin-proposal-class-properties'
]
}
}
},
{
test: /\.js$/,
enforce: 'pre',
use: ['source-map-loader'],
},
{
test: /\.(png|jpg|gif|svg)$/i,
use: [
{
loader: 'url-loader',
options: {
limit: 8192,
},
},
],
}
]
},
stats: {
warningsFilter: [/Failed to parse source map/],
},
};
我很惊讶在这个特定问题上没有找到太多其他内容,并且担心我错过了一些通常很简单的事情。 我很乐意包含任何其他可能有用的代码片段,但我希望错误代码可能是一个强有力的指示器。
任何建议都将受到热烈欢迎!
编辑 - 更多上下文:
Version: webpack 4.43.0
Time: 6561ms
Built at: 07/31/2020 11:20:55 AM
Asset Size Chunks Chunk Names
aafa1b05e4b76ffd04c1fe92edbf15f2.svg 654 bytes [emitted]
main.js 3.6 MiB main [emitted] main
Entrypoint main = main.js
[0] multi (webpack)-dev-server/client?http://localhost:9000 ./src/index.js 40 bytes {main} [built]
[../lensing/dist/main.js] 2.46 MiB {main} [built] [1 warning]
[./node_modules/openseadragon/build/openseadragon/openseadragon.js] 674 KiB {main} [built]
[./node_modules/webpack-dev-server/client/index.js?http://localhost:9000] (webpack)-dev-server/client?http://localhost:9000 4.29 KiB {main} [built]
[./node_modules/webpack-dev-server/client/overlay.js] (webpack)-dev-server/client/overlay.js 3.51 KiB {main} [built]
[./node_modules/webpack-dev-server/client/socket.js] (webpack)-dev-server/client/socket.js 1.53 KiB {main} [built]
[./node_modules/webpack-dev-server/client/utils/createSocketUrl.js] (webpack)-dev-server/client/utils/createSocketUrl.js 2.91 KiB {main} [built]
[./node_modules/webpack-dev-server/client/utils/log.js] (webpack)-dev-server/client/utils/log.js 964 bytes {main} [built]
[./node_modules/webpack-dev-server/client/utils/reloadApp.js] (webpack)-dev-server/client/utils/reloadApp.js 1.59 KiB {main} [built]
[./node_modules/webpack-dev-server/client/utils/sendMessage.js] (webpack)-dev-server/client/utils/sendMessage.js 402 bytes {main} [built]
[./node_modules/webpack-dev-server/node_modules/strip-ansi/index.js] (webpack)-dev-server/node_modules/strip-ansi/index.js 162 bytes {main} [built]
[./node_modules/webpack/hot sync ^\.\/log$] (webpack)/hot sync nonrecursive ^\.\/log$ 170 bytes {main} [built]
[./src/PIA23533_index32.csv] 622 bytes {main} [built]
[./src/index.css] 519 bytes {main} [built]
[./src/index.js] 1.69 KiB {main} [built]
+ 27 hidden modules
WARNING in ../lensing/dist/main.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from "data" URL: data:application/json;charset=utf-8;base64,{"version":3,"file":"./src/viewfinder.js.js","sources":["webpack://lensing/./src/viewfinder.js?b5ef"],"sourcesContent":["import * as d3 from 'd3';\n\n/**\n * @class Viewfinder\n */\nexport default class Viewfinder {\n\n    // Class refs\n    lensing = null;\n\n    // Data\n    data = null;\n    on = false;\n\n    // Elements\n    els = {\n        dataPointG: null,\n        g: null,\n        radialG: null,\n        svg: null,\n        boxG: null\n    };\n\n    // Configs\n    configs = {\n        boxW: 150,\n        boxH: 50,\n        deg: 0,\n        extend: 200,\n        gMargin: {top: 0, left: 0, right: 0, bottom: 0},\n        gH: 0,\n        gW: 0,\n        h: 0,\n        r: 0,\n        rPointer: 0,\n        rPointerExt: 25,\n        w: 0,\n    };\n\n    // Tools - TODO add boxScale to trace perimeter\n    tools = {\n        coordScale: d3.scaleLinear()\n            .domain([0, 360])\n            .range([Math.PI, -Math.PI]),\n        lineMaker: d3.line(),\n        xScale: d3.scaleLinear(),\n        yScale: d3.scaleLinear()\n    }\n\n    /*\n    Constructor\n     */\n    constructor(_lensing) {\n        // Fields\n        this.lensing = _lensing;\n\n        // Init\n        this.init();\n    }\n\n    /**\n     * 1.\n     * @function init\n     *\n     */\n    init() {\n        // Define this\n        const vis = this;\n\n        // Build svg, g\n        vis.els.svg = d3.select(vis.lensing.overlay.container)\n            .append('svg');\n        vis.els.g = vis.els.svg.append('g')\n            .attr('class', 'viewfinder_g')\n            .style('transform', `translate(${vis.configs.gMargin.top}px, ${vis.configs.gMargin.left}px)`);\n\n        // Attach component g's\n        vis.els.radialG = vis.els.g.append('g')\n            .attr('class', 'viewfinder_radial_g');\n        vis.els.dataPointG = vis.els.radialG.append('g')\n            .attr('class', 'viewfinder_data_point_g');\n        vis.els.dataPointG.append('path')\n            .attr('fill', 'none')\n            .attr('stroke', 'rgba(255, 255, 255, 1)')\n            .style('transform', 'translate3d(0, 0, 0)');\n        vis.els.boxG = vis.els.dataPointG.append('g')\n            .attr('class', 'viewfinder_box_g')\n            .style('transform', 'translate3d(0, 0, 0)')\n            .style('visibility', 'hidden');\n        vis.els.boxG.append('rect')\n            .attr('width', vis.configs.boxW)\n            .attr('height', vis.configs.boxH)\n            .attr('fill', 'none')\n            .attr('stroke', 'rgba(255, 255, 255, 1)')\n            .attr('stroke-width', '0.5px');\n        vis.els.boxG.append('text')\n            .attr('class', 'viewfinder_box_text viewfinder_box_text_a')\n            .attr('fill', 'white')\n            .attr('x', `${vis.configs.boxW / 2}px`)\n            .attr('y', `${Math.round(vis.configs.boxH / 3)}px`)\n            .attr('text-anchor', 'middle')\n            .attr('alignment-baseline', 'middle')\n            .style('font-family', 'sans-serif')\n            .style('font-size', '12px')\n            .style('font-weight', 'lighter');\n        vis.els.boxG.append('text')\n            .attr('class', 'viewfinder_box_text viewfinder_box_text_b')\n            .attr('fill', 'white')\n            .attr('x', `${vis.configs.boxW / 2}px`)\n            .attr('y', `${Math.round(vis.configs.boxH * 2 / 3)}px`)\n            .attr('text-anchor', 'middle')\n            .attr('alignment-baseline', 'middle')\n            .style('font-family', 'sans-serif')\n            .style('font-size', '11px')\n            .style('font-style', 'italic')\n            .style('font-weight', 'lighter');\n\n    }\n\n    /**\n     * @function wrangle\n     *\n     */\n    wrangle() {\n        // Define this\n        const vis = this;\n\n        // Update data\n        vis.data = this.lensing.configs.pxData;\n\n        // Update configs\n        vis.configs.r = vis.lensing.configs.rad / vis.lensing.configs.pxRatio;\n        vis.configs.rPointer = vis.configs.r + vis.configs.rPointerExt;\n        vis.configs.w = vis.configs.h = (vis.configs.r + vis.configs.extend) * 2;\n        vis.configs.gW = vis.configs.w - (vis.configs.gMargin.right + vis.configs.gMargin.left);\n        vis.configs.gH = vis.configs.h - (vis.configs.gMargin.top + vis.configs.gMargin.bottom);\n\n        // Check coordinate position\n        const x = this.lensing.configs.pos[0] / vis.lensing.configs.pxRatio - this.lensing.viewer.canvas.clientWidth / 2;\n        const y = this.lensing.configs.pos[1] / vis.lensing.configs.pxRatio - this.lensing.viewer.canvas.clientHeight / 2;\n        vis.deg = Math.atan2(y, x) * (180 / Math.PI);\n\n        // Update tools\n        vis.tools.xScale\n            .domain([-vis.configs.rPointer, vis.configs.rPointer])\n            .range([-vis.configs.boxW, 0]);\n        vis.tools.yScale\n            .domain([-vis.configs.rPointer, vis.configs.rPointer])\n            .range([-vis.configs.boxH, 0]);\n\n        // Render\n        vis.render();\n    }\n\n    /**\n     * @function render\n     *\n     */\n    render() {\n        // Define this\n        const vis = this;\n\n        if (vis.on) {\n\n            // Update svg, g\n            vis.els.svg.attr('width', vis.configs.w)\n                .attr('height', vis.configs.h)\n                .attr('style', `position: absolute; left: ${-vis.configs.extend}px; top: ${-vis.configs.extend}px;`)\n\n            // Update radialG\n            vis.els.radialG.style('transform', `translate(${vis.configs.gW / 2}px, ${vis.configs.gH / 2}px)`)\n\n            // Update dataPointG\n            vis.els.dataPointG\n                .datum(vis.data)\n                .each(function (d) {\n                    const g = d3.select(this);\n\n                    // Pointer coords\n                    const pCoords = getCoords(vis.configs.rPointer, vis.deg - 90);\n                    const addX = Math.round(vis.tools.xScale(pCoords[0]));\n                    const addY = Math.round(vis.tools.yScale(pCoords[1]));\n\n                    // Update path\n                    g.select('path')\n                        .attr('d', vis.tools.lineMaker([[0, 0], pCoords]));\n\n                    // Update boxG visibility, pos\n                    vis.els.boxG.style('visibility', 'visible');\n                    vis.els.boxG.style('transform', `translate(${pCoords[0] + addX}px, ${pCoords[1] + addY}px)`);\n                });\n\n            /* getCoords */\n            function getCoords(r, i) {\n                const x = Math.round(r * Math.sin(vis.tools.coordScale(i)));\n                const y = Math.round(r * Math.cos(vis.tools.coordScale(i)));\n                return [x, y];\n            }\n        } else {\n\n            // Hide\n            vis.els.boxG.style('visibility', 'hidden');\n        }\n\n    }\n\n    /**\n     * @function update_box_text\n     * Updates the text from data\n     *\n     * @param {Object} d\n     *\n     */\n    update_box_test(d) {\n        // Define this\n        const vis = this;\n\n        // Update\n        vis.els.boxG.select('.viewfinder_box_text_a')\n            .text(`Color Index #${d.index}`);\n        vis.els.boxG.select('.viewfinder_box_text_b')\n            .text(`rgb(${d.r}, ${d.g}, ${d.b})`);\n    }\n\n\n}"],"mappings":";;;;;;;;;;;AAAA;AAEA;;;;AAGA;AAEA;AAGA;AAIA;AASA;AAgBA;AACA;AASA;;;AAGA;AAAA;AACA;AADA;AACA;AADA;AACA;AADA;AACA;AADA;AApCA;AACA;AACA;AACA;AACA;AALA;AACA;AAoCA;AA3BA;AACA;AACA;AACA;AACA;AAAA;AAAA;AAAA;AAAA;AAAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AAZA;AACA;AA2BA;AAXA;AAGA;AACA;AACA;AANA;AACA;AAYA;AACA;AACA;AAEA;AACA;AAEA;;;;;;;;;AAKA;AACA;AACA;AACA;AAEA;AAEA;AACA;AAIA;AAEA;AAEA;AAIA;AAIA;AAMA;AAUA;AAYA;AAEA;;;;;;;AAIA;AACA;AACA;AACA;AAEA;AACA;AAEA;AACA;AACA;AACA;AACA;AACA;AAEA;AACA;AACA;AACA;AAEA;AAGA;AACA;AAIA;AACA;AAEA;;;;;;;AAIA;AACA;AACA;AACA;AACA;AA8BA;AA9BA;AAgCA;AACA;AACA;AACA;AACA;AAlCA;AACA;AACA;AAIA;AACA;AAEA;AAGA;AACA;AAEA;AACA;AACA;AACA;AAEA;AACA;AAGA;AACA;AACA;AAQA;AAEA;AACA;AACA;AAEA;AAEA;;;;;;;;;;AAOA;AACA;AACA;AACA;AAEA;AAEA;AAEA;;;;;;","sourceRoot":""}\n//#
@ ./src/index.js 3:0-29 65:19-30
更好的方法。 以下保留源地图,并仅删除垃圾邮件警告。 从文档
module.exports = {
module: {
rules: [
{
test: /\.js$/,
enforce: "pre",
use: ["source-map-loader"],
},
],
},
ignoreWarnings: [/Failed to parse source map/],
};
如果您在使用react-scripts
/cra 版本5.0.0
时遇到此问题。 您需要将以下内容添加到您的.env
文件中
GENERATE_SOURCEMAP=false
或者您可以将脚本更新为
"start": "GENERATE_SOURCEMAP=false react-scripts start",
注意:这是一个临时补丁,直到5.0.1
发布。 请参阅 create-react-app repo pull request更新: 5.0.1 于 2022 年 4 月发布。 变更日志。 更新没有解决这个问题。 不知道什么时候会♂️
我也有同样的问题。
这不是解决方案,而是比其他“答案”更好的解决方法:
将 source-map-loader 的webpack.config.js
module.rules 设置更改为:
//module.rules:[
{
test: /\.js$/,
enforce: 'pre',
use: [
{
//needed to chain sourcemaps. see: https://webpack.js.org/loaders/source-map-loader/
loader: 'source-map-loader',
options: {
filterSourceMappingUrl: (url, resourcePath) => {
// console.log({ url, resourcePath }) example:
// {
// url: 'index.js.map',
// resourcePath: '/repos/xlib-wsl/common/temp/node_modules/.pnpm/https-proxy-agent@5.0.0/node_modules/https-proxy-agent/dist/index.js'
// }
if (/.*\/node_modules\/.*/.test(resourcePath)) {
return false
}
return true
}
}
}],
},
也就是说,不要为你的 node_module 依赖加载源映射。
{
test: [/\.js?$/, /\.ts?$/, /\.jsx?$/, /\.tsx?$/],
enforce: 'pre',
exclude: /node_modules/,
use: ['source-map-loader'],
},
将其包含到配置文件中并将source-map-loader
作为开发依赖项下载
添加到上述解决方案中,当使用添加了react-app-rewired
和customize-cra
create-react-app
时,您还可以摆脱源 map 警告更新config-overrides.js
和设置 ignoreWarnings
const { override } = require("customize-cra");
const ignoreWarnings = value => config => {
config.ignoreWarnings = value;
return config;
};
module.exports = override(
ignoreWarnings([/Failed to parse source map/])
);
扩展 FrozenKiwi 对Craco的回答
// craco.config.js
module.exports = {
reactScriptsVersion: "react-scripts" /* (default value) */,
webpack: {
mode: 'extends',
configure: {
module: {
rules: [
{
test: /\.js$/,
enforce: "pre",
use: ["source-map-loader"],
},
],
},
ignoreWarnings: [/Failed to parse source map/],
},
},
}
面临同样的问题,我认为你的 api 没有被调用是因为 cors 问题
在处理使用create-react-app
的项目时,我在控制台中收到了相同的警告,以下解决方案对我有用。
我用另一个CRA
项目中的相同文件夹替换了node_modules
中的@remix-run
文件夹,该项目在没有此警告的情况下运行,并且警告消失了。
为什么要发出警告?
I was running webpack on an npm package in watch mode and testing it on a demo app that was also using webpack in watch mode by using npm link [package-name]
.
开发人员的解决方法:
从演示中的webpack.config.js
中删除source-map-loader
。
这个解决方案可以帮助我创建反应应用程序。
您可以通过编辑文件 node_modules/react-scripts/config/webpack.config.js 来添加此修复,并将其粘贴在行性能之后:false,
ignoreWarnings: [
// Ignore warnings raised by source-map-loader.
// some third party packages may ship miss-configured sourcemaps, that interrupts the build
// See: https://github.com/facebook/create-react-app/discussions/11278#discussioncomment-1780169
/**
*
* @param {import('webpack').WebpackError} warning
* @returns {boolean}
*/
function ignoreSourcemapsloaderWarnings(warning) {
return (
warning.module &&
warning.module.resource.includes('node_modules') &&
warning.details &&
warning.details.includes('source-map-loader')
);
},
],
但是当您安装 yarn 或 npm 安装时,您的编辑将被删除。
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