[Home](./index.md) > [@datashaper/schema](./schema.md) > [TypeHints](./schema.typehints.md) > [naValues](./schema.typehints.navalues.md) ## TypeHints.naValues property Strings to consider NaN or null. Default: \['-1.\#IND', '1.\#QNAN', '1.\#IND', '-1.\#QNAN', '\#N/A N/A', '\#N/A', 'N/A', 'n/a', 'NA', '', '\#NA', 'NULL', 'null', 'NaN', '-NaN', 'nan', '-nan', ''\] Signature: ```typescript naValues?: string[]; ```