Closure Compiler v20240317 released

[Bradford Smith]

Downloads:
Maven: http://search.maven.org/#search%7Cga%7C1%7Ca%3A%22closure-compiler%22
NPM: https://www.npmjs.com/package/google-closure-compiler

Release Notes:
https://github.com/google/closure-compiler/wiki/Releases

### March 17, 2024 (v20240317)

*   Add `--variable_map_input_file` and `--property_map_input_file` options
    to the OSS command-line runner.

*   fix infinite recursion in certain template type checks

*   Moved the warning/error on use of string continuations to be a linter-only
    check.

*   Error on unrecognized Closure .base method calls instead of silently
    ignoring them, which would previously lead to property renaming bugs.
*   Rename `removeDeadCode` to `removeUnreachableCode`. `remove_dead_code` is
    replaced by `remove_unreachable_code`.

    "dead code" is extremely ambiguous where as "unreachable" is more often used
    when talking about CFG guided code removals.

*   Add externs for maps api v3.56

*   Define --browser_featureset_year 2024 based on Chromium 120, Firefox 121,
    and Safari 17.2. For the first time, all major browsers have surpassed
    Closure Compiler's support for emitting JS, so users opting into BFY 2024
    may see more modern JS in their binaries over time as support for emitting
    additional JS language features lands in Closure Compiler. And as always,
    userland code can also use goog.FEATURESET_YEAR to produce binaries
    specialized for modern browsers.

    For more info on newly supported features, see:
    https://caniuse.com/?compare=chrome+108,safari+16.2,firefox+108,chrome+120,safari+17.2,firefox+121&compareCats=all

    Notable features newly supported in 2024 browsers include: Offscreen Canvas,
    AVIF images, the `loading` attribute, Import Maps, CSS Subgrid, LCH and Lab
    color values, and tons of CSS features.

*   Merge #4134 by ecrider: Add missing `AbortSignal` static methods.

    In addition, this also changes `AbortSignal` from `@interface` to `@constructor`,
    and add the missing property implementation (`addEventListener`,
    `removeEventListener`, `dispatchEvent`) as it was not required before as an
    interface.

*   Allow `$` in `@template` names

*   Fix inlining bug treating assignments in chunks as unconditionally loaded

*   Added externs and polyfills for `Array.findLast`, `Array.findLastIndex`, and
    `TypedArray` variants (https://github.com/tc39/proposal-array-find-from-last)

*   Preserve unions of different `ReadonlyArray` types instead of using raw type

*   Detect toggle usage via `goog.module.get`.
*   Fix transpilation of block-scoped vars in loop bodies to no longer leak data
    from one iteration into the TDZ of the next iteration

*   Fix `MakeDeclaredNamesUnique` so that it does not generate conflicting names

*   Allow unused `void` operator without a suspicious code warning

*   Files annotated with `@nocoverage` will not be instrumented for code coverage.

*   Speed up escaping JavaScript.

*   Generate one conformance report for each chunk.

*   Allow subclasses to broaden visibility of overridden methods

*   Support tested assignments of classes (e.g. `let Foo = Foo_1 = class
    Foo{}`). This is newly emitted by TypeScript 5.2 for decorated classes,
    which reference a static property of itself.
*   Fix enclosing `@ngInject` detection for TypeScript 5.2 emit for decorated
    classes.

*   Fix case where `goog.forwardDeclare` conformance error message would omitted
    the `goog.forwardDeclare`d type name and just print "NoResolvedType" instead.

*   Fixed bug where optimizations would, in rare cases, copy static properties
    between unrelated classes. This is unlikely to be a breaking change since
    those properties should later be dead-code eliminated, and any accidental
    references should cause a missing property error.

*   don't crash when emitting member function defs whose names refer to collapsed
    properties

[a...@scirra.com]

Thanks for the update!