Support Jest fuzz tests written in TypeScript #449
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oetr
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Jest script transformer uses the configured Jest extensions, like ts-jest, and allows us to load more file formats.
Loaded sources could already contain inline source maps, e.g. if they were loaded by ts-jest, which need to be forwarded to the internal transformers. Otherwise the resulting coverage report would be off.
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Many projects in the JavaScript ecosystem are actually developed in TypeScript. Usually these projects use Jest to directly execute tests also written in TypeScript via appropriate on-the-fly transpilers (e.g. ts-jest).
To prevent a dedicated transpilation step of the tests when using Jazzer.js, support for directly executing Jest fuzz tests written in TypeScript is added.