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node_modules/stop-iteration-iterator/index.js
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1lostsun
update project
25 май 2025, 13:12
25 май 2025, 13:12
78a0079
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'use strict'; var SLOT = require('internal-slot'); var $SyntaxError = require('es-errors/syntax'); var $StopIteration = typeof StopIteration === 'object' ? StopIteration : null; /** @type {import('.')} */ module.exports = function getStopIterationIterator(origIterator) { if (!$StopIteration) { throw new $SyntaxError('this environment lacks StopIteration'); } SLOT.set(origIterator, '[[Done]]', false); /** @template T @typedef {T extends Iterator<infer U> ? U : never} IteratorType */ /** @typedef {IteratorType<ReturnType<typeof getStopIterationIterator>>} T */ var siIterator = { next: /** @type {() => IteratorResult<T>} */ function next() { // eslint-disable-next-line no-extra-parens var iterator = /** @type {typeof origIterator} */ (SLOT.get(this, '[[Iterator]]')); var done = !!SLOT.get(iterator, '[[Done]]'); try { return { done: done, // eslint-disable-next-line no-extra-parens value: done ? void undefined : /** @type {T} */ (iterator.next()) }; } catch (e) { SLOT.set(iterator, '[[Done]]', true); if (e !== $StopIteration) { throw e; } return { done: true, value: void undefined }; } } }; SLOT.set(siIterator, '[[Iterator]]', origIterator); // @ts-expect-error TODO FIXME return siIterator; };