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Chris Tate
93af33085e
* Handle positioned string affix calls in static mode * Record preflight baselines for string affix fixtures
19 lines
811 B
JavaScript
19 lines
811 B
JavaScript
let trace = "";
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function receiver() { trace += "r"; return "abcde"; }
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function needle() { trace += "n"; return "bc"; }
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function position() { trace += "p"; return "1.9"; }
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console.log(receiver().startsWith(needle(), position()), trace);
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trace = "";
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console.log(receiver().endsWith(needle(), position()), trace);
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trace = "";
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console.log(receiver().endsWith(needle(), void position()), trace);
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/** @type {(number | string | boolean | null | undefined)[]} */
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const positions = [0, "1.9", true, false, null, undefined, NaN, Infinity];
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for (const value of positions) {
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const text = "a😀bc";
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console.log(text.startsWith("😀", value), text.startsWith("bc", value));
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console.log(text.endsWith("😀", value), text.endsWith("bc", value));
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console.log(text.startsWith("", value), text.endsWith("", value));
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}
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