Make numbers nullable by allowing null values to be echoed from asNumber() (rjsf-team#1269)

* Make numbers nullable by allowing null values to be echoed from asNumber() * fix: revert package-lock changes

Author: glompix

playground/samples/nullable.js

@@ -15,7 +15,7 @@ module.exports = {
  title: "Last name",
  },
  age: {
- type: "integer",
+ type: ["integer", "null"],
  title: "Age",
  },
  bio: {
@@ -43,6 +43,7 @@ module.exports = {
  "ui:widget": "updown",
  "ui:title": "Age of person",
  "ui:description": "(earthian year)",
+ "ui:emptyValue": null,
  },
  bio: {
  "ui:widget": "textarea",

src/utils.js

@@ -272,6 +272,9 @@ export function asNumber(value) {
  if (value === "") {
  return undefined;
  }
+ if (value === null) {
+ return null;
+ }
  if (/\.$/.test(value)) {
  // "3." can't really be considered a number even if it parses in js. The
  // user is most likely entering a float.

test/utils_test.js

@@ -342,6 +342,10 @@ describe("utils", () => {
  it("should return undefined if the input is empty", () => {
  expect(asNumber("")).eql(undefined);
  });
+
+ it("should return null if the input is null", () => {
+ expect(asNumber(null)).eql(null);
+ });
  });
 
  describe("orderProperties()", () => {