Angular NX workspace: getting error "Required property 'main' is missing

I have a project that's being split apart using nx workspaces. Some of the workspaces give the error:

Required property 'main' is missing


when running the nx test command, and some don't. There seems to be nothing that would cause this in nx.json. Here is the relevant content of my angular.json:

{
"version": 1,
"cli": {
"defaultCollection": "@nrwl/angular",
"analytics": false
},
"schematics": {
"@nrwl/angular": {
"application": {
"linter": "eslint"
},
"library": {
"linter": "eslint"
},
"storybook-configuration": {
"linter": "eslint"
}
},
"@nrwl/angular:application": {
"style": "scss",
"linter": "eslint",
"unitTestRunner": "jest",
"e2eTestRunner": "cypress"
},
"@nrwl/angular:library": {
"style": "scss",
"linter": "eslint",
"unitTestRunner": "jest"
},
"@nrwl/angular:component": {
"style": "scss"
}
},
"newProjectRoot": "apps",
"projects": {
"pricing": {
"projectType": "application",
"root": "apps/pricing",
"sourceRoot": "apps/pricing/src",
"prefix": "trade-ops",
"architect": {
"build": {
"builder": "ngx-build-plus:browser",
"options": {
"outputPath": "dist/apps/pricing",
"index": "apps/pricing/src/index.html",
"main": "apps/pricing/src/main.ts",
"polyfills": "apps/pricing/src/polyfills.ts",
"tsConfig": "apps/pricing/tsconfig.app.json",
"aot": true,
"assets": [
{
"glob": "*",
"input": "libs/gav-shared/Assets/Icons/",
"output": "assets/"
},
"apps/pricing/src/assets"
],
"styles": ["apps/pricing/src/styles.scss"],
"scripts": []
},
"configurations": {
"production": {
"optimization": true,
"outputHashing": "none",
"sourceMap": false,
"namedChunks": false,
"extractLicenses": true,
"vendorChunk": false,
"buildOptimizer": true,
"budgets": [
{
"type": "initial",
"maximumWarning": "10mb",
"maximumError": "25mb"
},
{
"type": "anyComponentStyle",
"maximumWarning": "6kb",
"maximumError": "10kb"
}
]
}
}
},
"serve": {
"builder": "ngx-build-plus:dev-server",
"options": {
"browserTarget": "pricing:build"
},
"configurations": {
"production": {
"browserTarget": "pricing:buildroduction"
}
}
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "pricing:build"
}
},
"lint": {
"builder": "@nrwl/linter:eslint",
"options": {
"lintFilePatterns": [
"apps/pricing/src/**/*.ts",
"apps/pricing/src/**/*.html"
]
}
},
"test": {
"builder": "ngx-build-plus:karma",
"outputs": ["coverage/apps/pricing"],
"options": {
"jestConfig": "apps/pricing/jest.config.js",
"passWithNoTests": true
}
}
}
},
"pricing-e2e": {
"root": "apps/pricing-e2e",
"sourceRoot": "apps/pricing-e2e/src",
"projectType": "application",
"architect": {
"e2e": {
"builder": "@nrwl/cypress:cypress",
"options": {
"cypressConfig": "apps/pricing-e2e/cypress.json",
"tsConfig": "apps/pricing-e2e/tsconfig.e2e.json",
"devServerTarget": "pricing:serve"
},
"configurations": {
"production": {
"devServerTarget": "pricing:serveroduction"
}
}
},
"lint": {
"builder": "@nrwl/linter:eslint",
"options": {
"lintFilePatterns": ["apps/pricing-e2e/**/*.{js,ts}"]
}
}
}
},
// Other projects...
},
"defaultProject": "trade-operations"
}


It also gives this error when running "nx test" (on the default project).

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