a387973821
* add benchmark * refactor: create tt.privateName token for private names * add backward compat privateName = hash + name to Babel 7 * perf: get private name SV from token value * chore: tweak benchmark file * chore: update test fixtures * convert tt.privateName to PrivateIdentifier * perf: avoid most isPrivateName call * Update packages/babel-parser/src/parser/expression.js Co-authored-by: Justin Ridgewell <justin@ridgewell.name> * perf: use inlinable codePointAtPos * make prettier happy Co-authored-by: Justin Ridgewell <justin@ridgewell.name>
35 lines
1020 B
JavaScript
35 lines
1020 B
JavaScript
import Benchmark from "benchmark";
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import baseline from "@babel-baseline/parser";
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import current from "../../lib/index.js";
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import { report } from "../util.mjs";
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const suite = new Benchmark.Suite();
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// All codepoints in [0x4e00, 0x9ffc] are valid identifier name per Unicode 13
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function createInput(length) {
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if (length > 0x9ffc - 0x4e00) {
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throw new Error(
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`Length greater than ${
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0x9ffc - 0x4e00
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} is not supported! Consider modify the \`createInput\`.`
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);
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}
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let source = "class C { ";
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for (let i = 0; i < length; i++) {
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source += "#" + String.fromCharCode(0x4e00 + i) + ";";
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}
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return source + " }";
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}
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function benchCases(name, implementation, options) {
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for (const length of [256, 512, 1024, 2048]) {
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const input = createInput(length);
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suite.add(`${name} ${length} length-1 private properties`, () => {
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implementation.parse(input, options);
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});
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}
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}
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benchCases("baseline", baseline);
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benchCases("current", current);
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suite.on("cycle", report).run();
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