.

index.d.ts

@@ -10,8 +10,8 @@ export function parseExcelDate(excelSerialDate: number) : typeof Date;
 
 type Input = File;
 
-function readXlsxFile(input: Input, options: ParseWithSchemaOptions) : Promise<ParsedObjectsResult>;
-function readXlsxFile(input: Input, options: ParseWithMapOptions) : Promise<ParsedObjectsResult>;
-function readXlsxFile(input: Input, options?: ParseWithoutSchemaOptions) : Promise<Row[]>;
+export function readXlsxFile<T extends object>(input: Input, options: ParseWithSchemaOptions<T>) : Promise<ParsedObjectsResult<T>>;
+export function readXlsxFile<T extends object>(input: Input, options: ParseWithMapOptions) : Promise<ParsedObjectsResult<T>>;
+export function readXlsxFile(input: Input, options?: ParseWithoutSchemaOptions) : Promise<Row[]>;
 
 export default readXlsxFile;

node/index.d.ts

@@ -16,8 +16,8 @@ export function parseExcelDate(excelSerialDate: number) : typeof Date;
 
 type Input = Stream | PathLike;
 
-function readXlsxFile(input: Input, options: ParseWithSchemaOptions) : Promise<ParsedObjectsResult>;
-function readXlsxFile(input: Input, options: ParseWithMapOptions) : Promise<ParsedObjectsResult>;
-function readXlsxFile(input: Input, options?: ParseWithoutSchemaOptions) : Promise<Row[]>;
+export function readXlsxFile<T extends object>(input: Input, options: ParseWithSchemaOptions<T>) : Promise<ParsedObjectsResult<T>>;
+export function readXlsxFile<T extends object>(input: Input, options: ParseWithMapOptions) : Promise<ParsedObjectsResult<T>>;
+export function readXlsxFile(input: Input, options?: ParseWithoutSchemaOptions) : Promise<Row[]>;
 
 export default readXlsxFile;

package.json

@@ -1,6 +1,6 @@
 {
   "name": "read-excel-file",
-  "version": "5.2.13",
+  "version": "5.2.20",
   "description": "Read small to medium `*.xlsx` files in a browser or Node.js. Parse to JSON with a strict schema.",
   "module": "index.js",
   "sideEffects": false,

types.d.ts

@@ -44,27 +44,33 @@ export type Schema = Record<string, SchemaEntry>
 export interface Error {
 	error: string;
 	row: number;
-	column: number;
+	column: string;
 	value?: any;
 	type?: SchemaEntry;
 }
 
 type Cell = string | number | boolean | typeof Date
 export type Row = Cell[]
 
-export interface ParsedObjectsResult {
-	rows: object[];
+export interface ParsedObjectsResult<T extends object> {
+	rows: T[];
 	errors: Error[];
 }
 
-export interface ParseWithSchemaOptions {
+export interface ParseWithSchemaOptions<T extends object> {
 	schema: Schema;
 	transformData?: (rows: Row[]) => Row[];
 	sheet?: number | string;
 }
 
+type MapProperty = string;
+type MapObject = {
+  [key: string]: MapProperty | MapObject;
+};
+type Map = MapObject;
+
 export interface ParseWithMapOptions {
-	map: object;
+	map: Map;
 	transformData?: (rows: Row[]) => Row[];
 	sheet?: number | string;
 }