fix: numeric for negative numbers (#291)

Author: scop

src/index.test.ts

@@ -606,6 +606,8 @@ for (const parser of supportedParsers) {
   test(`${parser}: validates a sorted JSON object with a numeric custom sort`, async (t) => {
     const fixture = {
       first: 'first',
+      '-100': null,
+      '-42': null,
       0: null,
       3: null,
       20: null,
@@ -641,11 +643,13 @@ for (const parser of supportedParsers) {
     const fixture = {
       z: null,
       a: null,
+      '-42': null,
       b: null,
       0: null,
       100: null,
       first: 'first',
       20: null,
+      '-100': null,
       3: null,
       exampleNestedObject: {
         z: null,

src/index.test.ts.md

@@ -353,6 +353,8 @@ Generated by [AVA](https://avajs.dev).
 > Snapshot 1
 
     `{␊
+      "-100": null,␊
+      "-42": null,␊
       "0": null,␊
       "3": null,␊
       "20": null,␊
@@ -378,6 +380,8 @@ Generated by [AVA](https://avajs.dev).
 > Snapshot 1
 
     `{␊
+      "-100": null,␊
+      "-42": null,␊
       "0": null,␊
       "3": null,␊
       "20": null,␊

src/index.test.ts.snap

@@ -29,7 +29,7 @@ function lexicalSort(a: string, b: string): number {
   return 0;
 }
 
-const integerPrefixRegex = /^(\d+)/u;
+const integerPrefixRegex = /^(-?\d+)/u;
 
 /**
  * Numeric sort function for strings, meant to be used as the sort