react-querybuilder
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React Query Builder component for constructing queries and filters, with utilities for executing them in various database and evaluation contexts
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text/typescript
/**
* Converts a value to lowercase if it's a string, otherwise returns the value as is.
*/
export declare const lc: <T>(v: T) => T;
/**
* Regex matching numeric strings. Passes for positive/negative integers, decimals,
* and E notation, with optional surrounding whitespace.
*/
export declare const numericRegex: RegExp;
/**
* Determines if a variable is a plain old JavaScript object, aka POJO.
*/
export declare const isPojo: (obj: any) => obj is Record<string, any>;
/**
* Simple helper to determine whether a value is null, undefined, or an empty string.
*/
export declare const nullOrUndefinedOrEmpty: (value: any) => value is null | undefined | "";