error with sourcemaps

[spielcrypto]

I reproduce this issue when I use source maps with this plugin.
My config file:

const path = require('path')
const webpack = require("webpack");
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MinifyPlugin = require("babel-minify-webpack-plugin");

module.exports = {
	entry: path.resolve(__dirname, './app/component/index'),
    devtool: 'source-map',
	output: {
		path: path.resolve(__dirname, './dist'),
		filename: 'app.bundle.js'
	},

	resolve: {
		extensions: ['.ts', '.tsx', '.js', '.jsx']
	},

	module: {
		rules: [{
			test: /\.tsx?$/,
			exclude: /node_modules/,
			loaders: ['ts-loader']
		}, {
			test: /\.css$/,
			include: /node_modules/,
			loaders: ['style-loader', 'css-loader']
		}, {
			test: /\.scss$/,
			use: [{
				loader: "style-loader"
			}, {
				loader: "css-loader"
			}, {
				loader: "sass-loader"
			}]
		}, {
			test: /\.(eot|svg|ttf|woff|woff2)$/,
			loaders: ['file-loader?name=fonts/[name].[ext]']
        }]
    },
    
    plugins: [
        new MinifyPlugin()
    ]
}

The error which I get is this:

/home/razorpack/develop/pyrite-prism/node_modules/webpack-sources/node_modules/source-map/lib/source-map-generator.js:276
        throw new Error(
        ^

Error: original.line and original.column are not numbers -- you probably meant to omit the original mapping entirely and only map the generated position. If so, pass null for the original mapping instead of an object with empty or null values.
    at SourceMapGenerator_validateMapping [as _validateMapping] (/home/razorpack/develop/pyrite-prism/node_modules/webpack-sources/node_modules/source-map/lib/source-map-generator.js:276:15)
    at SourceMapGenerator_addMapping [as addMapping] (/home/razorpack/develop/pyrite-prism/node_modules/webpack-sources/node_modules/source-map/lib/source-map-generator.js:110:12)
    at /home/razorpack/develop/pyrite-prism/node_modules/webpack-sources/node_modules/source-map/lib/source-map-generator.js:72:17
    at Array.forEach (<anonymous>)
    at BasicSourceMapConsumer.SourceMapConsumer_eachMapping [as eachMapping] (/home/razorpack/develop/pyrite-prism/node_modules/webpack-sources/node_modules/source-map/lib/source-map-consumer.js:157:14)
    at Function.SourceMapGenerator_fromSourceMap [as fromSourceMap] (/home/razorpack/develop/pyrite-prism/node_modules/webpack-sources/node_modules/source-map/lib/source-map-generator.js:48:24)
    at SourceMapSource.node (/home/razorpack/develop/pyrite-prism/node_modules/webpack-sources/lib/SourceMapSource.js:32:35)
    at SourceMapSource.proto.sourceAndMap (/home/razorpack/develop/pyrite-prism/node_modules/webpack-sources/lib/SourceAndMapMixin.js:30:18)
    at getTaskForFile (/home/razorpack/develop/pyrite-prism/node_modules/webpack/lib/SourceMapDevToolPlugin.js:33:30)
    at chunk.files.forEach.file (/home/razorpack/develop/pyrite-prism/node_modules/webpack/lib/SourceMapDevToolPlugin.js:91:21)
    at Array.forEach (<anonymous>)
    at /home/razorpack/develop/pyrite-prism/node_modules/webpack/lib/SourceMapDevToolPlugin.js:89:18
    at Array.forEach (<anonymous>)
    at Compilation.<anonymous> (/home/razorpack/develop/pyrite-prism/node_modules/webpack/lib/SourceMapDevToolPlugin.js:88:12)
    at Compilation.applyPlugins1 (/home/razorpack/develop/pyrite-prism/node_modules/tapable/lib/Tapable.js:75:14)
    at self.applyPluginsAsync.err (/home/razorpack/develop/pyrite-prism/node_modules/webpack/lib/Compilation.js:670:11)
    at next (/home/razorpack/develop/pyrite-prism/node_modules/tapable/lib/Tapable.js:202:11)
    at Compilation.<anonymous> (/home/razorpack/develop/pyrite-prism/node_modules/babel-minify-webpack-plugin/dist/index.js:119:11)
    at Compilation.applyPluginsAsyncSeries (/home/razorpack/develop/pyrite-prism/node_modules/tapable/lib/Tapable.js:206:13)
    at self.applyPluginsAsync.err (/home/razorpack/develop/pyrite-prism/node_modules/webpack/lib/Compilation.js:666:10)
    at Compilation.applyPluginsAsyncSeries (/home/razorpack/develop/pyrite-prism/node_modules/tapable/lib/Tapable.js:195:46)
    at sealPart2 (/home/razorpack/develop/pyrite-prism/node_modules/webpack/lib/Compilation.js:662:9)
    at Compilation.applyPluginsAsyncSeries (/home/razorpack/develop/pyrite-prism/node_modules/tapable/lib/Tapable.js:195:46)
    at Compilation.seal (/home/razorpack/develop/pyrite-prism/node_modules/webpack/lib/Compilation.js:605:8)
    at applyPluginsParallel.err (/home/razorpack/develop/pyrite-prism/node_modules/webpack/lib/Compiler.js:508:17)
    at /home/razorpack/develop/pyrite-prism/node_modules/tapable/lib/Tapable.js:289:11
    at _addModuleChain (/home/razorpack/develop/pyrite-prism/node_modules/webpack/lib/Compilation.js:507:11)
    at processModuleDependencies.err (/home/razorpack/develop/pyrite-prism/node_modules/webpack/lib/Compilation.js:477:14)
    at _combinedTickCallback (internal/process/next_tick.js:131:7)
    at process._tickCallback (internal/process/next_tick.js:180:9)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! pyrite-bootstrap@0.0.1 production: `webpack --config ./webpack.production.config.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the pyrite-bootstrap@0.0.1 production 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!     /home/razorpack/.npm/_logs/2017-11-09T19_15_16_251Z-debug.log

When I use the source maps without this plugin it works fine.
The version plugin is: 0.2.0

[michael-ciniawsky]

Could you try to provide a small repo with a file/module where this error occurs ? I'm currently debugging this and a failing example would be quite helpful :)

[spielcrypto]

Sure @michael-ciniawsky, this is the repository https://github.com/pyrite-components/pyrite-prism . You have to install as global nodemon and typescript. To reproduce the fail you need to execute npm run production

[simonbuchan]

In particular, I found cheap-* source maps work, e.g. module-source-map dies, while cheap-module-source-map does not.

[ingro]

Got the same problem, using cheap-source-map instead of source-map doesn't throw error though.

[timwis]

Just want to chime in that this is happening to me too. Ref webpack/webpack#5931

For those unfamiliar with cheap-source-map, here's some docs: https://webpack.js.org/configuration/devtool/

[eliperelman]

Running git bisect on this turns up the following commit:

❯ git bisect good
d0a724cec766ea5fbea9ecc514d38f7fd2ee3735 is the first bad commit
commit d0a724cec766ea5fbea9ecc514d38f7fd2ee3735
Author: Joshua Wiens <wiens.joshua@gmail.com>
Date:   Sat Aug 12 02:50:01 2017 -0500

    refactor: Apply webpack-defaults (#51)

    * refactor: Init webpack-defaults
    * style: Update for defaults
    * chore: Remove legacy babel env setting
    * chore: Update repo & bugs in pacakge.json
    * test: Fix source map test assertion syntax

    BREAKING CHANGE: Enforces `engines` of `"node": ">=4.3.0 < 5.0.0 || >= 5.10`
    BREAKING CHANGE: Enforces `peerDependency` of `"webpack": "^2.0.0 || ^3.0.0`

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[bradchoate]

Also having this problem with the 'source-map' option.