system path in generated service-worker.js

[guzhongren]

BEFORE YOU SUBMIT please read the following:

• I'm submitting a bug report
• I'm submitting a feature request
• I'm submitting a support request

webpack version:
4.20

sw-precache-webpack-plugin version:
latest

Please tell us about your environment:
Linux

Browser: [Phantom XX | Chrome XX | Firefox XX | IE XX | Safari XX | Other XX]
Chrome 64
Current behavior:
just like #142, my index.html is generated by html-webpack-plugin, my config.js is copied from local with copy-webpack-plugin; in generated file service-worker.js, like this

Expected/desired behavior:
let system path to relative path

If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem along with your:

• Webpack configuration:

const SWPrecacheWebpackPlugin = require('sw-precache-webpack-plugin')
...
new SWPrecacheWebpackPlugin({
      dontCacheBustUrlsMatching: /\.\w{8}\./,
      filename: 'service-worker.js',
      minify: true,
      mergeStaticsConfig: true,
      navigateFallback: '/dist/' + '/index.html',
      navigateFallbackWhitelist: [/^(?!\/__).*/],
      staticFileGlobsIgnorePatterns: [/\.map$/, /asset-manifest\.json$/],
      // stripPrefix: path.join(__dirname, 'dist').replace(/[a-zA-Z0-9/\\]+build/g, '/dist') // i added ,but no useful
    })

• Generated service worker (not minified):

"use strict";
var precacheConfig = [
    ["/dist/favicon.ico", "b5f4be6421ade8fc5bdcde1839afd32f"],
    ["/dist/fonts/1b35b5.woff", "1b35b521c0082d56b9ac413ddb0660ef"],
    ["/dist/fonts/4c40e9.ttf", "4c40e950d3719c21f75c2dc7a9312999"],
    ["/dist/fonts/62759b.eot", "62759b1cf27452e085eddbb8ab29ad2b"],
    ["/dist/fonts/8c9b05.eot", "8c9b05a6db51b83bbeb48a623489b2aa"],
    ["/dist/fonts/92acc6.ttf", "92acc6829cf612e62ecf2be54e9344f0"],
    ["/dist/fonts/f2fa34.woff", "f2fa34de139501e77481e947df04d891"],
    ["/dist/images/0051dd.png", "0051ddcf95941a0b5f8c9a3eb3e48f0e"],
    ["/dist/images/0c9d50.png", "0c9d509f3692cee55f728e1eb0bf5b83"],
    ["/dist/images/18f564.png", "18f564d05b17f6efc2d8783fc9241dfb"],
    ["/dist/images/1f7759.png", "1f7759764abeebbff24b00dcca35251b"],
    ["/dist/images/22ffa1.png", "22ffa1b3964afadd3f8f4cd1b39d9a02"],
    ["/dist/images/2adfe0.png", "2adfe0592c9854f92481120aed147bb8"],
    ["/dist/images/358fcb.png", "358fcb5b8cd5b2abf451fc36e0480e74"],
    ["/dist/images/393284.png", "39328431e63485068a519576cc190b6a"],
    ["/dist/images/3a19da.png", "3a19da4f237c792e5bde0ae7ff828970"],
    ["/dist/images/5552b9.png", "5552b9bbe9e7575fae5556292281ff7e"],
    ["/dist/images/5c3668.png", "5c3668b5fb1416b591e82d8100a60294"],
    ["/dist/images/657910.png", "657910a808ed7e42fcc4327f04c586b8"],
    ["/dist/images/6e3e89.png", "6e3e890d649dd3798e4d2310253c494d"],
    ["/dist/images/7404d1.png", "7404d12c8d2e65ffbc65926e98866e50"],
    ["/dist/images/7aa486.png", "7aa4861c6f7469881d32ea86808e9081"],
    ["/dist/images/814a8a.png", "814a8a59415c9e920ea3ef136d24f0f3"],
    ["/dist/images/90097b.png", "90097b974a2ea36a8be7ea8ed0b83baa"],
    ["/dist/images/a009f7.png", "a009f7f796cff0dfdb8eb5aa135b4cae"],
    ["/dist/images/bda41e.png", "bda41e42b7b63b5d2fea8c78ddf8be24"],
    ["/dist/images/ca5d45.svg", "ca5d4588dad9c32f49e895e7f19479df"],
    ["/dist/images/ea721a.png", "ea721a1a01fdeb5dcbc766676e83a72c"],
    ["/dist/images/edeeff.png", "edeeff60e7a0404a9fc40253c4c0240f"],
    ["/dist/images/ee54be.png", "ee54be898531a91a958840a809f75131"],
    ["/dist/images/f2881f.png", "f2881f99ea4c3a292a1c5e36642cd062"],
    ["/dist/images/f3cad8.png", "f3cad8416e24a89a9f94aed78b2dec8c"],
    ["/dist/js/2_bundle.js", "6acbaad121e56938a65db7b77641d0d8"],
    ["/dist/js/3_bundle.js", "062674176ae97b14a1b4043f2988c95c"],
    ["/dist/js/4_bundle.js", "b782bb05914cb524a99e5c731d790187"],
    ["/dist/js/app_bundle.js", "d94779c11322e9a7ff12ebece77e741b"],
    ["/dist/js/runtime_bundle.js", "2b836ad06df9998d358346bf35d76e6d"],
    ["/dist/style/2.css", "53ac223df2aea7dec705012ec556daae"],
    ["/dist/style/3.css", "f9fa71513a18887291fafde6c89f38df"],
    ["/dist/style/4.css", "566bec76673f96860938dc6c4558d01a"],
    ["/dist/style/app.css", "f82983901e4266328c1af75d12ae1d88"],
    ["/dist/style/vendors.css", "dc3df81b3bb041761595338061eb28aa"],
    ["/home/c4/Desktop/Project/SummitWeb/build/config.js", "b0ebcf61d580987a8b3b075bd6aeff6a"],
    ["/home/c4/Desktop/Project/SummitWeb/build/index.html", "ffb440e6c16a845e9d017141cfd96970"]
  ],
  cacheName = "sw-precache-v3-sw-precache-webpack-plugin-" + (self.registration ? self.registration.scope : ""),
  ignoreUrlParametersMatching = [/^utm_/],
  addDirectoryIndex = function (e, a) {
    var t = new URL(e);
    return "/" === t.pathname.slice(-1) && (t.pathname += a), t.toString()
  },
  cleanResponse = function (e) {
    return e.redirected ? ("body" in e ? Promise.resolve(e.body) : e.blob()).then(function (a) {
      return new Response(a, {
        headers: e.headers,
        status: e.status,
        statusText: e.statusText
      })
    }) : Promise.resolve(e)
  },
  createCacheKey = function (e, a, t, s) {
    var n = new URL(e);
    return s && n.pathname.match(s) || (n.search += (n.search ? "&" : "") + encodeURIComponent(a) + "=" + encodeURIComponent(t)), n.toString()
  },
  isPathWhitelisted = function (e, a) {
    if (0 === e.length) return !0;
    var t = new URL(a).pathname;
    return e.some(function (e) {
      return t.match(e)
    })
  },
  stripIgnoredUrlParameters = function (e, a) {
    var t = new URL(e);
    return t.hash = "", t.search = t.search.slice(1).split("&").map(function (e) {
      return e.split("=")
    }).filter(function (e) {
      return a.every(function (a) {
        return !a.test(e[0])
      })
    }).map(function (e) {
      return e.join("=")
    }).join("&"), t.toString()
  },
  hashParamName = "_sw-precache",
  urlsToCacheKeys = new Map(precacheConfig.map(function (e) {
    var a = e[0],
      t = e[1],
      s = new URL(a, self.location),
      n = createCacheKey(s, hashParamName, t, /\.\w{8}\./);
    return [s.toString(), n]
  }));

function setOfCachedUrls(e) {
  return e.keys().then(function (e) {
    return e.map(function (e) {
      return e.url
    })
  }).then(function (e) {
    return new Set(e)
  })
}
self.addEventListener("install", function (e) {
  e.waitUntil(caches.open(cacheName).then(function (e) {
    return setOfCachedUrls(e).then(function (a) {
      return Promise.all(Array.from(urlsToCacheKeys.values()).map(function (t) {
        if (!a.has(t)) {
          var s = new Request(t, {
            credentials: "same-origin"
          });
          return fetch(s).then(function (a) {
            if (!a.ok) throw new Error("Request for " + t + " returned a response with status " + a.status);
            return cleanResponse(a).then(function (a) {
              return e.put(t, a)
            })
          })
        }
      }))
    })
  }).then(function () {
    return self.skipWaiting()
  }))
}), self.addEventListener("activate", function (e) {
  var a = new Set(urlsToCacheKeys.values());
  e.waitUntil(caches.open(cacheName).then(function (e) {
    return e.keys().then(function (t) {
      return Promise.all(t.map(function (t) {
        if (!a.has(t.url)) return e.delete(t)
      }))
    })
  }).then(function () {
    return self.clients.claim()
  }))
}), self.addEventListener("fetch", function (e) {
  if ("GET" === e.request.method) {
    var a, t = stripIgnoredUrlParameters(e.request.url, ignoreUrlParametersMatching);
    (a = urlsToCacheKeys.has(t)) || (t = addDirectoryIndex(t, "index.html"), a = urlsToCacheKeys.has(t));
    !a && "navigate" === e.request.mode && isPathWhitelisted(["^(?!\\/__).*"], e.request.url) && (t = new URL("/dist//index.html", self.location).toString(), a = urlsToCacheKeys.has(t)), a && e.respondWith(caches.open(cacheName).then(function (e) {
      return e.match(urlsToCacheKeys.get(t)).then(function (e) {
        if (e) return e;
        throw Error("The cached response that was expected is missing.")
      })
    }).catch(function (a) {
      return console.warn('Couldn\'t serve response for "%s" from cache: %O', e.request.url, a), fetch(e.request)
    }))
  }
});