fix(csv-stringify): infinity is not defined in get (fix #475)

Author: wdavidw

packages/csv-stringify/lib/index.d.ts

@@ -32,7 +32,7 @@ export type Cast<T> = (
 export type PlainObject<T> = Record<string, T>;
 export type Input = any[];
 export interface ColumnOption {
-  key: string;
+  key: string | (string | number)[];
   header?: string;
 }
 export interface CastingContext {

packages/csv-stringify/lib/utils/get.js

@@ -84,8 +84,7 @@ const castPath = function (value, object) {
 const toKey = function (value) {
   if (typeof value === "string" || isSymbol(value)) return value;
   const result = `${value}`;
-  // eslint-disable-next-line
-  return result == "0" && 1 / value == -INFINITY ? "-0" : result;
+  return result == "0" && 1 / value == -Infinity ? "-0" : result;
 };
 
 const get = function (object, path) {

packages/csv-stringify/test/option.columns.ts

@@ -84,6 +84,19 @@ describe("Option `columns`", function () {
       );
     });
 
+    it("Is an array of object with key defined as an array", function (next) {
+      stringify(
+        [{ a: "a value", b: [{ c: "c value", d: "d value" }] }],
+        {
+          columns: [{ key: ["b", 0, "c"] }],
+        },
+        (err, records) => {
+          if (!err) records.should.eql("c value\n");
+          next(err);
+        },
+      );
+    });
+
     it("can still access fields with dots", function (next) {
       stringify(
         [{ "foo.bar": "1" }, { "foo.bar": "2" }],