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conformance · v135

v135 · regexp-escape — conformance probe

5 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: spec: https://tc39.es/proposal-regex-escaping/ chromestatus: #5179154657705984 generated 2026-06-01T09:44:00Z by conformance-author-v1-subagent
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id contract kind verdict detail
regexp-escape-is-function RegExp.escape is exposed as a static method. spec ↗ typeof
regexp-escape-string-returns-string RegExp.escape('foo') returns a string. spec ↗ script
regexp-escape-handles-metacharacters RegExp.escape escapes regex metacharacters so the result, used as a pattern, matches the original literal. spec ↗ script
regexp-escape-rejects-non-string RegExp.escape throws a TypeError when called with a non-string argument. spec ↗ throws
regexp-escape-escapes-leading-digit RegExp.escape escapes characters that have meaning at the start of a class (e.g. digits) so concatenation is safe. spec ↗ script