Switch to vitest

package.json

@@ -11,8 +11,8 @@
     "check": "npm run test && npm run lint && npm run typecheck",
     "lint": "eslint lib test",
     "release": "git diff --exit-code && PACKAGE_VERSION=$(jq -r .version package.json) && echo \"About to tag and push v$PACKAGE_VERSION. Continue? (y/n)\" && read -r REPLY && [ \"$REPLY\" = \"y\" ] && git tag --annotate v$PACKAGE_VERSION --message=v$PACKAGE_VERSION && git push origin v$PACKAGE_VERSION",
-    "test": "SKIPTABLES=1 tape './{lib,test}/*{.spec,-test}.js'|tap-min",
-    "test-all": "tape test/*-test.js",
+    "test": "SKIPTABLES=1 vitest run",
+    "test-all": "vitest run",
     "typecheck": "tsc --noEmit"
   },
   "main": "dist/numfmt.js",
@@ -58,11 +58,10 @@
     "globals": "~17.11.0",
     "jsdoc": "~4.0.5",
     "rollup": "~4.62.5",
-    "tap-min": "~3.0.0",
-    "tape": "~5.10.2",
     "typedoc-plugin-markdown": "~4.12.0",
     "typescript": "~5.9.3",
-    "typescript-eslint": "~8.68.0"
+    "typescript-eslint": "~8.68.0",
+    "vitest": "~4.1.11"
   },
   "allowScripts": {
     "fsevents@2.3.3": true

test/bigint.spec.ts

@@ -0,0 +1,29 @@
+import { expect, test } from 'vitest';
+import { format } from '../lib/index.js';
+
+test('bigint', () => {
+  expect(format('0', Number.MAX_SAFE_INTEGER)).toBe(String(Number.MAX_SAFE_INTEGER));
+  expect(format('0', 10n)).toBe('10');
+
+  expect(format('General', 10n)).toBe('10');
+  expect(format('General', 9007199254740991n)).toBe('9.0072E+15');
+
+  expect(format('0.0', 9007199254740991n)).toBe('9007199254740990.0');
+
+  expect(format('#,##0.0', 9007199254740991n)).toBe('9,007,199,254,740,990.0');
+  expect(format('#,##0.0', 9007199254750000n)).toBe('######');
+  expect(format('#,##0.0', -9007199254750000n)).toBe('######');
+
+  expect(format('#0-000-00', 9007199254750000n)).toBe('######');
+  expect(format('0%', 9007199254750000n)).toBe('######');
+
+  expect(format('#0-000-00', 9007199254750000n, { bigintErrorNumber: true })).toBe('9007199254750000');
+  expect(format('0%', 9007199254750000n, { bigintErrorNumber: true })).toBe('9007199254750000');
+
+  // preferably we should support bigint throughout:
+  // expect(format('#0-000-00', 9007199254750000n)).toBe('90071992547-500-00');
+  // expect(format('0%', 9007199254750000n)).toBe('900719925475000000%');
+
+  expect(format('0.000E+00', 999990000)).toBe('1.000E+09');
+  expect(format('0.000E+00', 999990000n)).toBe('1.000E+09');
+});

test/color.spec.ts

@@ -0,0 +1,44 @@
+import { expect, test } from 'vitest';
+import { formatColor } from '../lib/index.js';
+
+test('formatColor', () => {
+  // color works the same across number sections, but not text
+  expect(formatColor('0', 123)).toBe(null);
+  expect(formatColor('0', 0)).toBe(null);
+  expect(formatColor('0', -123)).toBe(null);
+  expect(formatColor('0', 'foo')).toBe(null);
+  expect(formatColor('[blue]0', 123)).toBe('blue');
+  expect(formatColor('[blue]0', 0)).toBe('blue');
+  expect(formatColor('[blue]0', -123)).toBe('blue');
+  expect(formatColor('[blue]0', 'foo')).toBe(null);
+  // can define separate colors per section
+  expect(formatColor('[blue]0;[green]-0;[magenta]0;[cyan]@', 1)).toBe('blue');
+  expect(formatColor('[blue]0;[green]-0;[magenta]0;[cyan]@', -1)).toBe('green');
+  expect(formatColor('[blue]0;[green]-0;[magenta]0;[cyan]@', 0)).toBe('magenta');
+  expect(formatColor('[blue]0;[green]-0;[magenta]0;[cyan]@', 'foo')).toBe('cyan');
+  // color is case insensitive
+  expect(formatColor('[red]0', 0)).toBe('red');
+  expect(formatColor('[Red]0', 0)).toBe('red');
+  expect(formatColor('[RED]0', 0)).toBe('red');
+  // all known primaries work
+  expect(formatColor('[black]0', 0)).toBe('black');
+  expect(formatColor('[blue]0', 0)).toBe('blue');
+  expect(formatColor('[cyan]0', 0)).toBe('cyan');
+  expect(formatColor('[green]0', 0)).toBe('green');
+  expect(formatColor('[magenta]0', 0)).toBe('magenta');
+  expect(formatColor('[red]0', 0)).toBe('red');
+  expect(formatColor('[white]0', 0)).toBe('white');
+  expect(formatColor('[yellow]0', 0)).toBe('yellow');
+  // 1-based index color resolutions
+  expect(formatColor('[color 0]0', 0)).toBe(null);
+  expect(formatColor('[color 1]0', 0)).toBe('#000000');
+  expect(formatColor('[color 2]0', 0)).toBe('#FFFFFF');
+  expect(formatColor('[color3]0', 0)).toBe('#FF0000');
+  // numbers are returned when indexColors is off
+  expect(formatColor('[color 0]0', 0, { indexColors: false })).toBe(null);
+  expect(formatColor('[color 1]0', 0, { indexColors: false })).toBe(1);
+  expect(formatColor('[color 2]0', 0, { indexColors: false })).toBe(2);
+  expect(formatColor('[color3]0', 0, { indexColors: false })).toBe(3);
+  // keywords are still returned when indexColors is off
+  expect(formatColor('[yellow]0', 0, { indexColors: false })).toBe('yellow');
+});

test/comma.spec.ts

@@ -0,0 +1,45 @@
+import { expect, test } from 'vitest';
+import { format } from '../lib/index.js';
+
+test('Correct handling of the comma operator', () => {
+  expect(format('0,', 1234567.89)).toBe('1235');
+  expect(format('0,,', 1234567.89)).toBe('1');
+  expect(format('0,,,', 1234567.89)).toBe('0');
+  expect(format('0,0', 1234567.89)).toBe('1,234,568');
+  expect(format('0,00', 1234567.89)).toBe('1,234,568');
+  expect(format('0,000', 1234567.89)).toBe('1,234,568');
+  expect(format('0,0,0', 1234567.89)).toBe('1,234,568');
+  expect(format('0,,0', 1234567.89)).toBe('1,234,568');
+  expect(format('0,,,0', 1234567.89)).toBe('1,234,568');
+  expect(format('0,x', 1234567.89)).toBe('1235x');
+  expect(format('0,x,', 1234567.89)).toBe('1235x,');
+  expect(format('0x,', 1234567.89)).toBe('1234568x,');
+  expect(format('0,,x', 1234567.89)).toBe('1x');
+  expect(format('0,x0', 1234567.89)).toBe('123456x8');
+  expect(format('0 , 0', 1234567.89)).toBe('123456 , 8');
+  expect(format('0, ,0', 1234567.89)).toBe('123456 ,8');
+  expect(format('0.,', 1234567.89)).toBe('1235.');
+  expect(format('0.0,', 1234567.89)).toBe('1234.6');
+  expect(format('0.0,0', 1234567.89)).toBe('1234567.89');
+  expect(format('0,0 0/0', 1234567.89)).toBe('1,234,567 8/9');
+  expect(format('0,0,,0', 1234567.89)).toBe('1,234,568');
+  expect(format('0.0,0,', 1234567.89)).toBe('1234.57');
+  expect(format('0.0 , 0 ,', 1234567.89)).toBe('1234567.8 , 9 ,');
+  expect(format('0 ,', 1234567.89)).toBe('1234568 ,');
+  expect(format('0x,', 1234567.89)).toBe('1234568x,');
+  expect(format('0 ,', 1234567.89)).toBe('1234568 ,');
+  expect(format('0 ,,', 1234567.89)).toBe('1234568 ,');
+  expect(format('0x,', 1234567.89)).toBe('1234568x,');
+  expect(format('x,0', 1234567.89)).toBe('x,1234568');
+
+  // Still unsolved by the formatter: digit interplay with 0#?
+  expect(format('01,', 1234567.89)).toBe('12351');
+  expect(format('09,', 1234567.89)).toBe('12359');
+  // expect(format('01,0', 1234567.89)).toBe('1,234,5618');
+  // expect(format('09,0', 1234567.89)).toBe('1,234,5698');
+  // expect(format('0, 9', 1234567.89)).toBe('1234568 9');
+
+  expect(() => format('0,0/0', '')).toThrow();
+  expect(() => format('0/0,0', '')).toThrow();
+  // expect(() => format('0 0/0,', '')).toThrow(); // "1234 4/7" gets emitted, same as Sheets
+});