webpack.config.js not found even if customWebpackConfig is not set

Describe the bug I just want to merge extra webpack config for production build. So I only config the production options, but for development build, it runs into errors: webpack.config.js not found

Builder:

• @angular-builders/custom-webpack
• 7.3.1

Libraries

• angular-devkit/build-angular: 0.12.3

Expect Ignore when customWebpackConfig is not set

Additional context My angular.json config is like

"build": {
          "builder": "@angular-builders/custom-webpack:browser",
          "options": {
            "outputPath": "dist/mall/browser",
            "index": "projects/mall/src/index.html",
            "main": "projects/mall/src/main.ts",
            "polyfills": "projects/mall/src/polyfills.ts",
            "tsConfig": "projects/mall/tsconfig.app.json",
            "sourceMap": true,
            "assets": [
              "projects/mall/src/favicon.ico",
              "projects/mall/src/assets"
            ],
            "styles": [
              "projects/mall/src/styles.scss"
            ],
            "scripts": [],
            "statsJson": true
          },
          "configurations": {
            "production": {
              "customWebpackConfig": {
                "path": "extra-webpack.config.js",
                "mergeStrategies": { "devtool": "replace" }
              }
         }

[just-jeb]

Yeah, indeed a use case that I missed. You’re welcome to PR (it’s just adding a default value in schema).
Meanwhile the workaround is to create an empty config for development and specify it in options.

[chaoyangnz]

Would you mind trying version 7.4.3?

Tried. it works. thanks