34 lines
1009 B
Plaintext
34 lines
1009 B
Plaintext
// warning: extremely hot code path.
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// This has been meticulously optimized for use
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// within npm install on large package trees.
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// Do not edit without careful benchmarking.
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const normalizeCache = Object.create(null);
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// Limit the size of this. Very low-sophistication LRU cache
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const MAX = 10000;
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const cache = new Set();
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export const normalizeUnicode = (s) => {
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if (!cache.has(s)) {
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// shake out identical accents and ligatures
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normalizeCache[s] = s
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.normalize('NFD')
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.toLocaleLowerCase('en')
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.toLocaleUpperCase('en');
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}
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else {
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cache.delete(s);
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}
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cache.add(s);
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const ret = normalizeCache[s];
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let i = cache.size - MAX;
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// only prune when we're 10% over the max
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if (i > MAX / 10) {
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for (const s of cache) {
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cache.delete(s);
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delete normalizeCache[s];
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if (--i <= 0)
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break;
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}
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}
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return ret;
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};
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//# sourceMappingURL=normalize-unicode.js.map |