Fix displaying third party webpack plugins errors

[Fer0x]

Some third party webpack plugins can generate custom single-line compiler errors without stacktrace.

For example with html-webpack-plugin I got following error as formatMessage argument:

'Template execution failed: TypeError: Cannot read property \'main\' of undefined' 

As fast solution I propose to add empty line to avoid big changes in formatMessage logic.

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[Timer]

Can you please give us a reproducing case that triggers this exact error? What exactly happens?

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[Fer0x]

@Timer
I have ejected react-scripts and now I try to upgrade to 2.x version.
I use custom html template where I use this line:

var scriptSrc = '<%= htmlWebpackPlugin.files.chunks.main.entry %>';

By some reasons files.chunks is not defined, but I can't see this error, instead I got following error:

  if (lines[1].indexOf(moduleWarningPrefix) === 0) {
               ^

TypeError: Cannot read property 'indexOf' of undefined
    at formatMessage (/Users/myproject/node_modules/react-dev-utils/formatWebpackMessages.js:44:16)
    at /Users/myproject/node_modules/react-dev-utils/formatWebpackMessages.js:169:12
    at Array.map (<anonymous>)
    at formatWebpackMessages (/Users/myproject/node_modules/react-dev-utils/formatWebpackMessages.js:168:37)
    at compiler.run (/Users/myproject/scripts/build.js:126:24)
    at finalCallback (/Users/myproject/node_modules/webpack/lib/Compiler.js:204:39)
    at hooks.done.callAsync.err (/Users/myproject/node_modules/webpack/lib/Compiler.js:253:14)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/Users/myproject/node_modules/tapable/lib/HookCodeFactory.js:32:10), <anonymous>:6:1)
    at AsyncSeriesHook.lazyCompileHook (/Users/myproject/node_modules/tapable/lib/Hook.js:154:20)
    at emitRecords.err (/Users/myproject/node_modules/webpack/lib/Compiler.js:251:22)
    at Compiler.emitRecords (/Users/myproject/node_modules/webpack/lib/Compiler.js:366:39)
    at emitAssets.err (/Users/myproject/node_modules/webpack/lib/Compiler.js:245:10)
    at hooks.afterEmit.callAsync.err (/Users/myproject/node_modules/webpack/lib/Compiler.js:352:14)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/Users/myproject/node_modules/tapable/lib/HookCodeFactory.js:32:10), <anonymous>:6:1)
    at AsyncSeriesHook.lazyCompileHook (/Users/myproject/node_modules/tapable/lib/Hook.js:154:20)
    at asyncLib.forEach.err (/Users/myproject/node_modules/webpack/lib/Compiler.js:349:27)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

[Timer]

Excellent. Thank you.