Add strict equalities in src/core/fonts.js
Add strict equalities in src/core/function.js
Add strict equalities in src/core/murmurhash3.js
Add strict equalities in src/core/obj.js
Add strict equalities in src/core/pattern.js
Add strict equalities in src/core/ps_parser.js
Add strict equalities in src/core/worker.js
Merge pull request #5120 from Snuffleupagus/strict-equalities-src-core-2

Add strict equalities in src/core/* (part 2)