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fix(csv-stringify): allow empty string column keys #532

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fix(csv-stringify): allow empty string column keys #532

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2 changes: 1 addition & 1 deletion packages/csv-stringify/lib/api/normalize_columns.js
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,7 @@ const normalize_columns = function (columns) {
column !== null &&
!Array.isArray(column)
) {
if (!column.key) {
if (!column.key && column.key !== "") {
return [
Error('Invalid column definition: property "key" is required'),
];
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15 changes: 15 additions & 0 deletions packages/csv-stringify/test/option.columns.js
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Original file line number Diff line number Diff line change
@@ -1,8 +1,23 @@
import "should";
import { stringify } from "../lib/index.js";
import { stringify as stringifySync } from "../lib/sync.js";

describe("Option `columns`", function () {
describe("definition", function () {
it("accepts an empty record key with an explicit header", function () {
stringifySync([{ "": "value" }], {
columns: [{ key: "", header: "blank" }],
header: true,
}).should.eql("blank\nvalue\n");
});

it("accepts an empty record key with the default header", function () {
stringifySync([{ "": "value" }], {
columns: [{ key: "" }],
header: true,
}).should.eql("\nvalue\n");
});

it("validates option types", function () {
(() => {
stringify([], { columns: true }, () => {});
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