89 lines
2.5 KiB
JavaScript
89 lines
2.5 KiB
JavaScript
const path = require('path');
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const picomatch = require('picomatch');
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const isGlob = require('is-glob');
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function normalizeOptions(dir, opts = {}) {
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const {ignore, ...rest} = opts;
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if (Array.isArray(ignore)) {
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opts = {...rest};
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for (const value of ignore) {
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if (value instanceof RegExp) {
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if (value.flags !== '') {
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throw new Error(
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`RegExp ignore patterns must not have flags (got /${value.source}/${value.flags}). Flags are not supported by the native matcher.`,
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);
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}
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if (!opts.ignoreGlobs) {
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opts.ignoreGlobs = [];
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}
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// The native backend uses std::regex_match (full-string match), but
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// callers expect JS .test() semantics (substring search). Wrapping the
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// source in ^[\\s\\S]*(?:…)[\\s\\S]*$ achieves that. The (?:…) group
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// isolates the source so leading/trailing | in the source stays contained.
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opts.ignoreGlobs.push(`^[\\s\\S]*(?:${value.source})[\\s\\S]*$`);
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} else if (isGlob(value)) {
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if (!opts.ignoreGlobs) {
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opts.ignoreGlobs = [];
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}
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const regex = picomatch.makeRe(value, {
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// We set `dot: true` to workaround an issue with the
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// regular expression on Linux where the resulting
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// negative lookahead `(?!(\\/|^)` was never matching
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// in some cases. See also https://bit.ly/3UZlQDm
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dot: true,
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windows: process.platform === 'win32',
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});
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opts.ignoreGlobs.push(regex.source);
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} else {
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if (!opts.ignorePaths) {
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opts.ignorePaths = [];
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}
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opts.ignorePaths.push(path.resolve(dir, value));
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}
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}
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}
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return opts;
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}
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exports.createWrapper = (binding) => {
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return {
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writeSnapshot(dir, snapshot, opts) {
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return binding.writeSnapshot(
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path.resolve(dir),
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path.resolve(snapshot),
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normalizeOptions(dir, opts),
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);
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},
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getEventsSince(dir, snapshot, opts) {
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return binding.getEventsSince(
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path.resolve(dir),
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path.resolve(snapshot),
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normalizeOptions(dir, opts),
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);
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},
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async subscribe(dir, fn, opts) {
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dir = path.resolve(dir);
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opts = normalizeOptions(dir, opts);
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await binding.subscribe(dir, fn, opts);
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return {
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unsubscribe() {
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return binding.unsubscribe(dir, fn, opts);
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},
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};
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},
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unsubscribe(dir, fn, opts) {
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return binding.unsubscribe(
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path.resolve(dir),
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fn,
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normalizeOptions(dir, opts),
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);
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},
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};
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};
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