a well-tested empty string module in case you forget how to make one

A loader that returns an empty string.

extension-json-empty-string-value-completion

Check if the value is undefined, null, empty string, NaN and Infinity.

Check if the value is not undefined, null, empty string, NaN and Infinity.

Validatem validator for ensuring that a value is a non-empty string

GraphQL Non-empty String

Return the first Unicode code point of a non-empty string.

get value of an environment variable; throw if undefined or empty string

Test if a value is an empty string.

Check an object, if all or some of its leaf nodes are empty. It detects empty string, empty array, empty object, null, undefined in the target object.

checks if foo is not defined, i.e. undefined, null, an empty string, array, object or NaN

Type guard to check if a value is NOT an empty string

Util to remove empty string, undefined, null and empty arrays in nested objects and arrays

Check if a value is empty (null, undefined, empty string, empty array, or empty object)

rewrite validator schema string default required rule and number default required rule let string allow empty string and number allow 0

Check if the given value is an empty string.

Functions for validating an expression or variable. A value is not valid if it is null, undefined, false. If value is a number it must be finite and not NaN. An empty string and a zero number is allowed.

Strips empty-string values from non-required MCP tool-call arguments before the call reaches the server. Fixes LLM function-calling quirks where models emit every optional key with an empty default.

A loader that returns an empty string module