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MIRROR: javascript for 🐜's, a tiny runtime with big ambitions ant.themackabu.dev
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566// Test string replace with regex
function assert(condition, message) { if (!condition) throw new Error(message);}
// Basic regex replacementconst str1 = 'hello world';const re1 = new RegExp('world');const result1 = str1.replace(re1, 'universe');console.log('Basic replace:', result1);
// Test with global flagconst str2 = 'foo bar foo baz';const re2 = new RegExp('foo', 'g');const result2 = str2.replace(re2, 'qux');console.log('Global replace:', result2);
// Test without global flag (should replace only first)const str3 = 'foo bar foo baz';const re3 = new RegExp('foo');const result3 = str3.replace(re3, 'qux');console.log('Non-global replace:', result3);
// Test with regex pattern (digits)const str4 = 'I have 2 apples and 3 oranges';const re4 = new RegExp('[0-9]+', 'g');const result4 = str4.replace(re4, 'X');console.log('Replace digits:', result4);
// Test with dot patternconst str5 = 'abc123def';const re5 = new RegExp('...', 'g');const result5 = str5.replace(re5, 'X');console.log('Replace with dot:', result5);
// Test string replace (without regex) - should still workconst str6 = 'hello world';const result6 = str6.replace('world', 'there');console.log('String replace:', result6);
const longNeedle = 'a'.repeat(128) + 'b';const longMiss = 'a'.repeat(4096);const longHit = `prefix:${longNeedle}:suffix`;
assert(longMiss.replace(longNeedle, 'x') === longMiss, 'long string replace miss mismatch');assert(longMiss.replaceAll(longNeedle, 'x') === longMiss, 'long string replaceAll miss mismatch');assert(longHit.replace(longNeedle, 'x') === 'prefix:x:suffix', 'long string replace hit mismatch');assert(longHit.replaceAll(longNeedle, 'x') === 'prefix:x:suffix', 'long string replaceAll hit mismatch');
const longLiteralRe = new RegExp(longNeedle);assert(!longLiteralRe.test(longMiss), 'long regexp literal miss mismatch');assert(longLiteralRe.test(longHit), 'long regexp literal hit mismatch');
for (let i = 0; i < 2000; i++) { const match = 'prefix route_123 suffix'.match('route_[0-9]+'); assert(match !== null && match[0] === 'route_123', 'cached string match mismatch'); assert('prefix route_123 suffix'.search('route_[0-9]+') === 7, 'cached string search mismatch');}
const splitMiss = 'a'.repeat(4096);const splitResult = splitMiss.split(/z/);assert(splitResult.length === 1 && splitResult[0] === splitMiss, 'sticky split miss mismatch');
console.log('All replace tests passed!');