{"version":3,"file":"perf.js","sourceRoot":"","sources":["../../src/perf.ts"],"names":[],"mappings":";;;AAQa,QAAA,WAAW,GACtB,CACE,OAAO,WAAW,KAAK,QAAQ;IAC/B,WAAW;IACX,OAAO,WAAW,CAAC,GAAG,KAAK,UAAU,CACtC,CAAC,CAAC;IACD,+DAA+D;IAC/D,WAAW;IACb,CAAC,CAAC,oBAAoB;QACpB,IAAI,CAAA","sourcesContent":["/**\n * this provides the default Perf object source, either the\n * `performance` global, or the `Date` constructor.\n *\n * it can be passed in via configuration to override it\n * for a single LRU object.\n */\nexport type Perf = { now: () => number }\nexport const defaultPerf: Perf =\n  (\n    typeof performance === 'object' &&\n    performance &&\n    typeof performance.now === 'function'\n  ) ?\n    /* c8 ignore start - this gets covered, but c8 gets confused */\n    performance\n  : /* c8 ignore stop */\n    Date\n"]}