node_modules/@angular/material/expansion/testing/package.json

{
  "name": "@angular/material/expansion/testing",
  "main": "../../bundles/material-expansion-testing.umd.js",
  "fesm2015": "../../fesm2015/expansion/testing.js",
  "esm2015": "../../esm2015/expansion/testing/index.js",
  "typings": "./index.d.ts",
  "module": "../../fesm2015/expansion/testing.js",
  "es2015": "../../fesm2015/expansion/testing.js"
}