Intent of map.ts ×3

All 6 exact tests in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/ 6 tests
- base/ 6 tests
  - test/ 6 tests
    
    common/ 6 tests
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/common/map.test|title=BidirectionalMap should delete values correctly|occurrence=1 Inherited map.ts ×1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/common/map.test|title=BidirectionalMap should get keys by value correctly|occurrence=1 Inherited map.ts ×1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/common/map.test|title=BidirectionalMap should handle clear correctly|occurrence=1 Inherited map.ts ×1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/common/map.test|title=BidirectionalMap should handle forEach correctly|occurrence=1 Inherited map.ts ×1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/common/map.test|title=BidirectionalMap should handle non-existent keys correctly|occurrence=1 Inherited map.ts ×1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/base/test/common/map.test|title=BidirectionalMap should set and get values correctly|occurrence=1 Inherited map.ts ×1