[csv-stringify] Add formatter options for boolean, date and object types

types/csv-stringify/csv-stringify-tests.ts

@@ -12,6 +12,16 @@ stringify([["1", "2", "3"], ["4", "5", "6"]], {
   // nothing
 });
 
+stringify([["1", true, new Date()], ["4", false, new Date()]], {
+	delimiter: ",",
+  formatters: {
+    bool: value => value ? 'yes' : 'no',
+    date: value => value.toISOString()
+  }
+}, (error: Error, output: string): void => {
+  // nothing
+});
+
 stream = stringify({ delimiter: "," });
 
 stream.write(["1", "2", "3"]);

types/csv-stringify/index.d.ts

@@ -1,6 +1,7 @@
 // Type definitions for csv-stringify 1.0
 // Project: https://github.com/wdavidw/node-csv-stringify
 // Definitions by: Rogier Schouten <https://github.com/rogierschouten>
+//                 Arjen van der Ende <https://github.com/arjenvanderende>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /// <reference types="node" />
@@ -55,6 +56,16 @@ declare namespace stringify {
          * special values are 'auto', 'unix', 'mac', 'windows', 'unicode'; defaults to 'auto' (discovered in source or 'unix' if no source is specified).
          */
         rowDelimiter?: string;
+        /**
+         * Override serialization of boolean, dates and complex objects.
+         */
+        formatters?: FormatterOpts;
+    }
+
+    interface FormatterOpts {
+        bool?: (value: boolean) => string;
+        date?: (value: Date) => string;
+        object?: (value: any) => string;
     }
 
     interface Stringifier extends NodeJS.ReadWriteStream {

types/csv-stringify/tslint.json

@@ -1 +1,6 @@
-{ "extends": "dtslint/dt.json" }
+{
+  "extends": "dtslint/dt.json",
+  "rules": {
+    "prefer-method-signature": false
+  }
+}