Angular build - Unmatched selector: %

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When I run npm run build which executes ng build -c production build will be completed as expected. But command prompt will be filled with this warning:

Warning: 303 rules skipped due to selector errors:
  0% -> Unmatched selector: %
  20% -> Unmatched selector: %
  53% -> Unmatched selector: %
  40% -> Unmatched selector: %
  43% -> Unmatched selector: %
  70% -> Unmatched selector: %
  80% -> Unmatched selector: %
  90% -> Unmatched selector: %
...

How to solve this warning?

package.json:

{
  "name": "wepod-clients",
  "version": "3.2.3",
  "scripts": {
    "ng": "ng",
    "start": "node patch.js && ng serve",
    "serve-auth": "ng run wepod-app:serve-auth-standalone:production",
    "build": "node patch.js && node --max_old_space_size=8192 ./node_modules/@angular/cli/bin/ng run wepod-app:app-shell:production && ng run wepod-app:auth-standalone:production",
    "server": "npm run build && http-server -p 9090 -c-1 dist",
    "test": "ng test",
    "lint": "ng lint --fix",
    "e2e": "ng e2e",
    "postinstall": "node patch.js && ngcc",
    "postbuild": "node post-build.js",
    "prepare": "husky install",
    "build-latest": "git pull origin production && npm run build"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^13.0.0",
    "@angular/cdk": "^13.0.0",
    "@angular/cli": "^13.0.1",
    "@angular/common": "^13.0.0",
    "@angular/compiler": "^13.0.0",
    "@angular/core": "^13.0.0",
    "@angular/forms": "^13.0.0",
    "@angular/localize": "^13.0.0",
    "@angular/platform-browser": "^13.0.0",
    "@angular/platform-browser-dynamic": "^13.0.0",
    "@angular/platform-server": "^13.0.0",
    "@angular/router": "^13.0.0",
    "@angular/service-worker": "^13.0.0",
    "@types/video.js": "^7.3.27",
    "animate.css": "^4.1.1",
    "assert": "^2.0.0",
    "bowser": "^2.11.0",
    "buffer": "^6.0.3",
    "bundle-loader": "^0.5.6",
    "compare-version": "^0.1.2",
    "constants-browserify": "^1.0.0",
    "crypto-browserify": "^3.12.0",
    "crypto-js": "^4.1.1",
    "d3": "^6.5.0",
    "hammerjs": "^2.0.8",
    "https-browserify": "^1.0.0",
    "jalali-moment": "^3.3.10",
    "lottie-web": "^5.7.13",
    "lzutf8": "^0.6.0",
    "net": "^1.0.2",
    "ng-gallery": "^5.1.1",
    "ng2-jalali-date-picker": "^2.4.2",
    "ngx-device-detector": "^1.5.2",
    "ngx-doughnut-chart": "0.0.4",
    "ngx-infinite-scroll": "^8.0.2",
    "ngx-lottie": "^7.0.4",
    "ngx-owl-carousel-o": "^3.1.1",
    "ngx-skeleton-loader": "^2.10.1",
    "ngx-toastr": "^12.1.0",
    "os-browserify": "^0.3.0",
    "podchat-browser": "^10.14.13",
    "rxjs": "^6.6.7",
    "stream-browserify": "^3.0.0",
    "stream-http": "^3.2.0",
    "tls": "0.0.1",
    "ts-ebml": "^2.0.2",
    "tslib": "^2.0.0",
    "uuid": "^8.3.2",
    "video.js": "^7.15.4",
    "videojs-record": "^4.5.0",
    "zone.js": "~0.11.4"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^13.0.1",
    "@angular-devkit/core": "^13.0.1",
    "@angular/compiler-cli": "^13.0.0",
    "@angular/language-service": "^13.0.0",
    "@egjs/hammerjs": "^2.0.17",
    "@types/hammerjs": "^2.0.40",
    "@types/jasmine": "~3.6.0",
    "@types/jasminewd2": "^2.0.10",
    "@types/node": "^12.20.36",
    "codelyzer": "^6.0.0",
    "colors": "^1.4.0",
    "git-tag-version": "^1.3.1",
    "gulp": "^4.0.2",
    "gulp-gzip": "^1.4.2",
    "http-server": "^14.0.0",
    "husky": "^7.0.4",
    "jasmine-core": "~3.6.0",
    "jasmine-spec-reporter": "~5.0.0",
    "karma": "^6.3.7",
    "karma-chrome-launcher": "~3.1.0",
    "karma-coverage-istanbul-reporter": "^2.1.0",
    "karma-jasmine": "~4.0.0",
    "karma-jasmine-html-reporter": "^1.5.0",
    "protractor": "^7.0.0",
    "ts-node": "^8.10.2",
    "tslint": "^6.1.3",
    "typescript": "4.4.4",
    "zip-dir": "^2.0.0"
  },
  "browser": {
    "fs": false,
    "path": false,
    "os": false
  }
}
2 Answers

After searching I found out that angular is removing support for IE 11.

There is 2 ways to confront that matter:

  1. Remove support for IE 11 as tstdplt mentioned from .browserslistrc or browserslist:
last 1 Chrome version
last 1 Firefox version
last 2 Edge major versions
last 2 Safari major versions
last 2 iOS major versions
Firefox ESR
not IE 11 # Angular supports IE 11 only as an opt-in. To opt-in, remove the 'not' prefix on this line.
  • not is essential.
  1. Add support by compiling your project to lower ECMAScript by polyfills. You can follow the steps mentioned in this article.

can you try to put the following into your ".browserlistrc" file. The file is located in the root directory of your project.

last 1 Chrome version
last 1 Firefox version
last 2 Edge major versions
last 2 Safari major versions
last 2 iOS major versions
Firefox ESR
IE 11

This once helped me to fix the error.

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