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Title: Introduce scanning fast paths by DanielRosenwasser · Pull Request #59244 · microsoft/TypeScript · GitHub

Open Graph Title: Introduce scanning fast paths by DanielRosenwasser · Pull Request #59244 · microsoft/TypeScript

X Title: Introduce scanning fast paths by DanielRosenwasser · Pull Request #59244 · microsoft/TypeScript

Description: TypeScript is a superset of JavaScript that compiles to clean JavaScript output. - Introduce scanning fast paths by DanielRosenwasser · Pull Request #59244 · microsoft/TypeScript

Open Graph Description: This change is an alternative PR to #59106.

X Description: This change is an alternative PR to #59106.

Opengraph URL: https://github.com/microsoft/TypeScript/pull/59244

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Move shebang check into the same branch as other # cases.https://github.com/microsoft/TypeScript/pull/59244/commits/18df6376173213c7dc789b5ce1ac480b91a13e2a
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Add a quicker check for identifiers, check for space sooner.https://github.com/microsoft/TypeScript/pull/59244/commits/bc21cdd7bc6d130b51fe95793ec0269bd1b873a0
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Optimize scan with a lookup table to reduce branching #59106 https://github.com/microsoft/TypeScript/pull/59106
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