support BigInt

Author: Rich-Harris

devalue.js

@@ -47,6 +47,7 @@ export function devalue(value) {
 
 			switch (type) {
 				case 'Number':
+				case 'BigInt':
 				case 'String':
 				case 'Boolean':
 				case 'Date':
@@ -253,6 +254,7 @@ function stringifyPrimitive(thing) {
 	if (thing === 0 && 1 / thing < 0) return '-0';
 	const str = String(thing);
 	if (typeof thing === 'number') return str.replace(/^(-)?0\./, '$1.');
+	if (typeof thing === 'bigint') return thing + 'n';
 	return str;
 }
 

devalue.test.js

@@ -68,6 +68,7 @@ describe('basics', (t) => {
 	t('Object', { foo: 'bar', 'x-y': 'z' }, '{foo:"bar","x-y":"z"}');
 	t('Set', new Set([1, 2, 3]), 'new Set([1,2,3])');
 	t('Map', new Map([['a', 'b']]), 'new Map([["a","b"]])');
+	t('BigInt', BigInt('1'), '1n');
 });
 
 describe('strings', (t) => {