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Type Inference for Regular Expressions

5

This PR adds type inference support to regular expressions for accurate and fine type checking. For example, the type of the following loosey[^1] regex: [^1]: It only matches a limited...

graphemecluster

`cancellationToken.js` is a file which contains an implementation of a file-based cancellation token. It is loaded dynamically by `tsserver.js`, but nowhere else. As far as I can tell, there's no...

jakebailey

Extra `*` characters inserted around decorator in fenced code block in JSDoc

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Does this issue occur when all extensions are disabled?: Yes - VS Code Version: 1.67.0-insider (commit: f050b17dacedba13962244b13c70084a473d08f7) - OS Version: Windows 11 Steps to Reproduce: 1. Open a TypeScript file...

rbuckton

`asserts this is T` does not narrow type of `this`

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### 🔎 Search Terms - `asserts this is T` - `narrow` - `assertions` - I also checked #59707, but it is unrelated (generic types). ### 🕗 Version & Regression Information...

OmarTawfik

fix(60223): add Promise.try() to ESNext lib

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Fixes #60223

dirkluijk

Typescript 5.6.3 throwing error "The inferred type of X cannot be named without a reference to Y. This is likely not portable. A type annotation is necessary."

2

### 🔎 Search Terms "inferred type" "portable" "type annotation is necessary" "cannot be named without a reference to" ### 🕗 Version & Regression Information - This changed between versions 5.5.4...

livingforjesus

### 🔍 Search Terms I was pretty sure an issue already existed for this, but I couldn't find it. Hopefully opening a new issue (to maybe be closed again) will...

NullVoxPopuli

### 🔎 Search Terms infinite type instantiation excessively deep recursive conditional ### 🕗 Version & Regression Information - This is the behavior in every version I tried, and I reviewed...

mstniy

`keyof Readonly<string[]>` different from `keyof Readonly<T>` where T is string[]

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### 🔎 Search Terms keyof Readonly array ### 🕗 Version & Regression Information Latest to date ### ⏯ Playground Link https://www.typescriptlang.org/play/?#code/C4TwDgpgBAKgjFAvFAShAhgEwPYDsA2IAPAM7ABOAlrgOYDaAugHwDcUA9O1ORjgSFDJVajALAAoUJFQJkAawghsAM1hw2nKAqWqeWPIUEVq9BhIlToAaUUB5ZWn38iMJki2KVqXgeKuWFuDQKABM7jYg9o58hKTGIswaXIAy5B46RsKmEkA ### 💻 Code ```ts type T1 = Readonly; //...

miguel-leon

From #59539 ### 🔎 Search Terms - paste imports ### 🕗 Version & Regression Information 5.7.0-dev.20241015 ### 💻 Code 1. Using a VS Code starter extension created with `yo code`...

mjbvz