{
  "name": "@webcomponents/custom-elements",
  "version": "1.0.0-alpha.4",
  "description": "HTML Custom Elements Polyfill",
  "main": "custom-elements.min.js",
  "directories": {
    "test": "tests"
  },
  "repository": {
    "type": "git",
    "url": "https://github.com/webcomponents/custom-elements.git"
  },
  "author": "The Polymer Authors",
  "license": "BSD-3-Clause",
  "bugs": {
    "url": "https://github.com/webcomponents/custom-elements/issues"
  },
  "scripts": {
    "bower-install": "$(npm bin)/bower install",
    "build": "$(npm bin)/gulp",
    "test": "$(npm bin)/wct"
  },
  "homepage": "http://webcomponents.org",
  "devDependencies": {
    "bower": "^1.8.0",
    "google-closure-compiler": "^20170124.0.0",
    "gulp": "^3.8.8",
    "gulp-sourcemaps": "^1.6.0",
    "rollup-stream": "^1.14.0",
    "vinyl-source-stream": "^1.1.0",
    "web-component-tester": "6.0.0-prerelease.3"
  }
}

{
  "name": "@webcomponents/custom-elements",
  "version": "1.0.0-alpha.4",
  "description": "HTML Custom Elements Polyfill",
  "main": "custom-elements.min.js",
  "directories": {
    "test": "tests"
  },
  "repository": {
    "type": "git",
    "url": "https://github.com/webcomponents/custom-elements.git"
  },
  "author": "The Polymer Authors",
  "license": "BSD-3-Clause",
  "bugs": {
    "url": "https://github.com/webcomponents/custom-elements/issues"
  },
  "scripts": {
    "bower-install": "$(npm bin)/bower install",
    "build": "$(npm bin)/gulp",
    "test": "$(npm bin)/wct"
  },
  "homepage": "http://webcomponents.org",
  "devDependencies": {
    "bower": "^1.8.0",
    "google-closure-compiler": "^20170124.0.0",
    "gulp": "^3.8.8",
    "gulp-sourcemaps": "^1.6.0",
    "rollup-stream": "^1.14.0",
    "vinyl-source-stream": "^1.1.0",
    "web-component-tester": "^6.0.0-prerelease.3"
  }
}

Use ranges for WCT in NPM
Use ranges for WCT in NPM