JavaScript tools
Format JSON safely: know what parsing can change
Format a JSON response with JavaScript, handle invalid input and spot cases where parsing can lose information.
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Clear explanations, worked examples and links to the primary documentation.
TypeScript
TypeScript narrowing and satisfies solve different problems
Use runtime guards to narrow uncertain values and satisfies to check configurations without confusing the two.
Read guideDates and data
Format dates with an explicit time zone
Show one JavaScript timestamp in London and Paris, keep UTC output separate and test seasonal differences.
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