fix(es/compat): Handle sparse arrays correctly in generator transforms

[0xe]

Description:

Transforms arrays with empty slots correctly.

function* generator() {yield [, 'hello']}

is transformed to:

// ...
function generator() {
    return _ts_generator(this, function(_state) {
        switch(_state.label){
            case 0:
                return [
                    4,
                    [
                        'hello'
                    ]
                ];
            case 1:
                _state.sent();
                return [
                    2
                ];
        }
    });
}

instead of:

function gen() {
    return _ts_generator(this, function (_state) {
        switch (_state.label) {
            case 0:
                return [
                    4,
                    [
                        ,
                        'hello'
                    ]
                ];
            case 1:
                _state.sent();
                return [
                    2
                ];
        }
    });
}

(playground url with 1.13.20)

BREAKING CHANGE:

Related issue (if exists):

[changeset-bot]

🦋 Changeset detected

Latest commit: 8c5c85f

The changes in this PR will be included in the next version bump.

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[codspeed-hq]

CodSpeed Performance Report

Merging #11131 will not alter performance

_{Comparing 0xe:scratch/satish/sparse-array-generators (8c5c85f) with main (1c9ab27)}

Summary

✅ 140 untouched