f0bdf2a1ae
Mutable exports, i.e. using this pattern
```
export let x = 0;
export function f() {
x += 1;
}
```
is problematic to transpile to CommonJS and Goog.module systems, we are
working on banning it google internal codebase.
The workaround is adding an explcit getter function.
PR Close #32425
Benchmark Directory Layout
Bazel
Under bazel the rules for laying out test files are slightly different. Use largetable/render3 as an example.
Put the perf file in current subdirectory (ie largetable) such that the same perf file can be used for each of the sub-subdirectories. (ie largetable/* should all be testable with the same perf file largetable/largetable_perf.spec.ts). Under bazel, typescript protractor spec files must end with .spec.ts or .test.ts.