/**
 * There are fields on our documents that are numbers, but the actual value
 * has characters like dollar signs, commas and others.
 * This function will strip off the non-numeric characters to ensure it's a
 * valid number.
 *
 * @param value The string value to convert to a number
 * @throws [[DataTypeExtractionError]] when original value can't be properly extracted as a number.
 */
export declare function extractNumber(value: string | number, defaultValue?: number | null): number | null;