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TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

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# Bug Report ### 🔎 Search Terms - find all references - f12 - default export ### 🕗 Version & Regression Information 4.7-beta Not a regression ### 💻 Code For...

Bug
Help Wanted
Domain: Symbol Navigation

### 🔎 Search Terms "transformTime time", "compile time" ### 🕗 Version & Regression Information - This changed between versions 5.5.4 and 5.6.2 ### ⏯ Playground Link _No response_ ### 💻...

Needs More Info

# Bug Report ### 🔎 Search Terms `exactOptionalPropertyTypes` `strictoptionalProperties` `Partial` index signature dictionary record ### 🕗 Version & Regression Information - This is the behavior in every version I tried,...

Suggestion
Awaiting More Feedback

### ⚙ Compilation target ESNext ### ⚙ Library ESNext ### Missing / Incorrect Definition `JSON.rawJSON()` appears to be missing. Apologies if I've missed something or if this is the wrong...

Bug
Help Wanted

It would be nice to have unused detection expanded, capable of detecting unused methods, exports, etc. **Code Example** _Shape.js_ ```javascript class Shape { constructor() { this.color = 'red'; } colorLog()...

Suggestion
In Discussion

### 🔎 Search Terms noUncheckedIndexedAccess, findIndex, undefined ### 🕗 Version & Regression Information Tried 5.8.2 and nightly (5.9.0-dev.20250310). ### ⏯ Playground Link https://www.typescriptlang.org/play/?noUncheckedIndexedAccess=true&ts=5.8.2#code/MYewdgzgLgBAhgJwQLhmArgWwEYFMEDaAujALwwECMANDAEy0DMRA3AFCiSwCWAJgB5l4SAHQAzbmF4BJKbn4AKQaQB8MZeToBKdtzEwFfQQEJyAWkpaYAbzYx7MTtHWoMOfEMSEjrOw6cgADa4IoEgAOZKOmwAvmxAA ### 💻 Code ```ts const arr: number[]...

Working as Intended

### 🔎 Search Terms nullish coalescing parentheses ast ### 🕗 Version & Regression Information - This is the behavior in every version I tried, and I reviewed the FAQ for...

Bug
Help Wanted

### 🔎 Search Terms in operator, noUncheckedIndexedAccess ### 🕗 Version & Regression Information Tested 5.8.2 and 5.9.0-dev.20250310 ### ⏯ Playground Link https://www.typescriptlang.org/play/?noUncheckedIndexedAccess=true&ts=5.8.2#code/MYewdgzgLgBAhgJwQLhmArgWwEYFMEDaAujALwwECMANDAEy0DMRA3AFCiSwCWAJgB6oMOfGXrtuAMxgAKPvxjcw8JAEoYAbzYwdMTtBiC0WPAjGJC81tt36QAG1wA6eyADmM-qvYBfNkA ### 💻 Code With an array: ```ts const...

Help Wanted
Possible Improvement

### 🔎 Search Terms type parameter accessor declaration different types ### 🕗 Version & Regression Information - This changed between versions 5.2 and 5.3 ### ⏯ Playground Link [Playground Link](https://www.typescriptlang.org/play/?ts=5.3.3#code/FAMwrgdgxgLglgewgAgLYEMDWBTAagCgEpkBvYZZGATwAdtkANAHgBUA+ZAXlOQHNsYyACZJsRAFzIQ6ADYBnegB9kLANzIFgkRDEA3SS2TKIYGTOIBfcsgBOAsDZQmzAQmTo5jJidQAjbDZswFbA2AAeNAg2glBIcoK6XGhYeESqwEA)...