Webpack 4 support : DeprecationWarning: loaderUtils.parseQuery() received a non-string value which can be problematic

[joyfulelement]

Do you want to request a feature or report a bug? Bug

What is the current behavior?

When upgrading to webpack 4 and with the node tracing turned on (process.traceDeprecation = true; in webpack.config.js), by running the webpack-dev-server --mode development, the following DeprecationWarning with stack trace is shown.

(node:32184) DeprecationWarning: loaderUtils.parseQuery() received a non-string value which can be problematic, see https://github.com/webpack/loader-utils/issues/56
parseQuery() will be replaced with getOptions() in the next major version of loader-utils.
    at Object.parseQuery (C:\app\node_modules\replace-loader\node_modules\loader-utils\index.js:78:3)
    at Object.module.exports (C:\app\node_modules\replace-loader\index.js:7:27)
    at LOADER_EXECUTION (C:\app\node_modules\loader-runner\lib\LoaderRunner.js:119:14)
    at runSyncOrAsync (C:\app\node_modules\loader-runner\lib\LoaderRunner.js:120:4)
    at iterateNormalLoaders (C:\app\node_modules\loader-runner\lib\LoaderRunner.js:229:2)
    at iterateNormalLoaders (C:\app\node_modules\loader-runner\lib\LoaderRunner.js:218:10)
    at C:\app\node_modules\loader-runner\lib\LoaderRunner.js:233:3
    at Object.context.callback (C:\app\node_modules\loader-runner\lib\LoaderRunner.js:111:13)
    at Object.module.exports (C:\app\node_modules\eslint-loader\index.js:225:11)
    at LOADER_EXECUTION (C:\app\node_modules\loader-runner\lib\LoaderRunner.js:119:14)

What is the expected behaviour?

I believe this is due to the loaderUtils.parseQuery() call:

replace-loader/index.js

Line 7 in af934cd

var query = loaderUtils.parseQuery(this.query);

which can be replaced by loaderUtils.getOptions() as indicated on webpack/loader-utils#56 (comment) help remove the Deprecation Warning.

Dependencies/Tool Lineup

"replace-loader": "0.2.0",
"webpack": "4.6.0",
"webpack-cli": "2.0.15",
"webpack-dev-server": "3.1.3",
Node v8.9.1
Windows 10