Support using a function as urlPattern in runtimeCaching

[jeffposnick]

R: @philipwalton

Fixes #1764

Pretty straightforward change to allow for functions to be passed in as the urlPattern value when using runtimeCaching.

The main difficulty was getting this tested, since chai isn't happy when using deep.equal to compare functions.

[workbox-pr-bot]

PR-Bot Size Plugin

Changed File Sizes

File	Before	After	Change	GZipped
packages/workbox-background-sync/build/workbox-background-sync.prod.js	3.51 KB	3.60 KB	+3%	1.56 KB
packages/workbox-broadcast-cache-update/build/workbox-broadcast-cache-update.prod.js	1.12 KB	1.88 KB	+68%	939 B	☠️
packages/workbox-build/build/index.js	4.02 KB	3.64 KB	-9%	1.36 KB
packages/workbox-cache-expiration/build/workbox-cache-expiration.prod.js	3.88 KB	3.15 KB	-19%	1.29 KB	🎉
packages/workbox-cacheable-response/build/workbox-cacheable-response.prod.js	587 B	594 B	+1%	350 B
packages/workbox-cli/build/app.js	6.76 KB	4.64 KB	-31%	1.69 KB	🎉
packages/workbox-cli/build/bin.js	2.32 KB	1.16 KB	-50%	580 B	🎉
packages/workbox-core/build/workbox-core.prod.js	7.47 KB	6.09 KB	-18%	2.75 KB	🎉
packages/workbox-navigation-preload/build/workbox-navigation-preload.prod.js	660 B	667 B	+1%	323 B
packages/workbox-precaching/build/workbox-precaching.prod.js	5.80 KB	5.27 KB	-9%	2.21 KB
packages/workbox-range-requests/build/workbox-range-requests.prod.js	1.63 KB	1.53 KB	-6%	764 B
packages/workbox-routing/build/workbox-routing.prod.js	2.87 KB	3.28 KB	+14%	1.43 KB	☠️
packages/workbox-strategies/build/workbox-strategies.prod.js	5.09 KB	4.75 KB	-7%	1.19 KB
packages/workbox-streams/build/workbox-streams.prod.js	1.57 KB	1.39 KB	-12%	683 B	🎉
packages/workbox-sw/build/workbox-sw.js	1.50 KB	1.51 KB	+1%	818 B
packages/workbox-webpack-plugin/build/generate-sw.js	8.04 KB	5.29 KB	-34%	1.84 KB	🎉
packages/workbox-webpack-plugin/build/index.js	742 B	349 B	-53%	255 B	🎉
packages/workbox-webpack-plugin/build/inject-manifest.js	10.30 KB	6.91 KB	-33%	2.40 KB	🎉

New Files

File	Size	GZipped
packages/workbox-google-analytics/build/workbox-offline-ga.prod.js	1.74 KB	877 B

All File Sizes

View Table

File	Before	After	Change	GZipped
packages/workbox-background-sync/build/workbox-background-sync.prod.js	3.51 KB	3.60 KB	+3%	1.56 KB
packages/workbox-broadcast-cache-update/build/workbox-broadcast-cache-update.prod.js	1.12 KB	1.88 KB	+68%	939 B	☠️
packages/workbox-build/build/_types.js	41 B	41 B	0%	61 B
packages/workbox-build/build/index.js	4.02 KB	3.64 KB	-9%	1.36 KB
packages/workbox-cache-expiration/build/workbox-cache-expiration.prod.js	3.88 KB	3.15 KB	-19%	1.29 KB	🎉
packages/workbox-cacheable-response/build/workbox-cacheable-response.prod.js	587 B	594 B	+1%	350 B
packages/workbox-cli/build/app.js	6.76 KB	4.64 KB	-31%	1.69 KB	🎉
packages/workbox-cli/build/bin.js	2.32 KB	1.16 KB	-50%	580 B	🎉
packages/workbox-core/build/workbox-core.prod.js	7.47 KB	6.09 KB	-18%	2.75 KB	🎉
packages/workbox-google-analytics/build/workbox-offline-ga.prod.js		1.74 KB		877 B
packages/workbox-navigation-preload/build/workbox-navigation-preload.prod.js	660 B	667 B	+1%	323 B
packages/workbox-precaching/build/workbox-precaching.prod.js	5.80 KB	5.27 KB	-9%	2.21 KB
packages/workbox-range-requests/build/workbox-range-requests.prod.js	1.63 KB	1.53 KB	-6%	764 B
packages/workbox-routing/build/workbox-routing.prod.js	2.87 KB	3.28 KB	+14%	1.43 KB	☠️
packages/workbox-strategies/build/workbox-strategies.prod.js	5.09 KB	4.75 KB	-7%	1.19 KB
packages/workbox-streams/build/workbox-streams.prod.js	1.57 KB	1.39 KB	-12%	683 B	🎉
packages/workbox-sw/build/workbox-sw.js	1.50 KB	1.51 KB	+1%	818 B
packages/workbox-webpack-plugin/build/generate-sw.js	8.04 KB	5.29 KB	-34%	1.84 KB	🎉
packages/workbox-webpack-plugin/build/index.js	742 B	349 B	-53%	255 B	🎉
packages/workbox-webpack-plugin/build/inject-manifest.js	10.30 KB	6.91 KB	-33%	2.40 KB	🎉

Workbox Aggregate Size Plugin

9.81KB gzip'ed (65% of limit)
24.06KB uncompressed