Map of invalid numeric character references to their replacements, according to HTML

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Returns true if a windows file path has invalid characters.

the schema validation library you actually wanted

correct invalid SPDX expressions

Returns true if a file path does not contain any invalid characters.

Promise based JSON parser. Handles invalid JSON data gracefully.

A package with intentionally invalid syntax, which will cause an error when imported.

Check if a date is invalid or not.

Sanitize out invalid xml characters from your strings

Detect invalid spies in Jest and Vitest tests

A require-able test fixture suite of valid and invalid Mapbox Vector Tiles

Validation of CSV file against user defined schema (returns back object with data and invalid messages)

Safely decode URI components, leaving invalid sequences as they are

Solution for `yyyy-MM-dd HH:mm:ss` is `Invalid Date` in Safari, IE, etc

This package generates valid and invalid dummy south african id numbers.

JavaScript library to repair broken/invalid JSON strings, especially from LLM outputs

A function that merges given class names, no matter their format: string with single or multiple class names or an array of class names. Filters out invalid class names as well.

filter react invalid dom props

Validate access to environment variables and parse them to the right type. Makes sure you don't accidentally deploy apps with missing or invalid environment variables.