@angular-devkit/build-webpack/src/builders/webpack/schema.json

Webpack Builder for Architect

{
  "$schema": "http://json-schema.org/draft-07/schema",
  "title": "Webpack Builder.",
  "description": "Webpack Builder schema for Architect.",
  "type": "object",
  "properties": {
    "webpackConfig": {
      "type": "string",
      "description": "The path to the Webpack configuration file."
    }
  },
  "additionalProperties": false,
  "required": ["webpackConfig"]
}