1029dd3686This adds support for WeakMap and WeakSet entries in `util.inspect`. The output is limited to a maximum entry length of `maxArrayLength`. PR-URL: https://github.com/nodejs/node/pull/19259 Fixes: https://github.com/nodejs/node/issues/19001: Reviewed-By: Yosuke Furukawa <yosuke.furukawa@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
39 lines
1.3 KiB
JavaScript
39 lines
1.3 KiB
JavaScript
'use strict';
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// This file provides access to some of V8's native runtime functions. See
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// https://github.com/v8/v8/wiki/Built-in-functions for further information
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// about their implementation.
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// They have to be loaded before anything else to make sure we deactivate them
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// before executing any other code. Gaining access is achieved by using a
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// specific flag that is used internally in the startup phase.
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// Clone the provided Map Iterator.
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function previewMapIterator(it) {
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return %MapIteratorClone(it);
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}
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// Clone the provided Set Iterator.
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function previewSetIterator(it) {
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return %SetIteratorClone(it);
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}
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// Retrieve all WeakMap instance key / value pairs up to `max`. `max` limits the
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// number of key / value pairs returned. Make sure it is a positive number,
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// otherwise V8 aborts. Passing through `0` returns all elements.
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function previewWeakMap(weakMap, max) {
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return %GetWeakMapEntries(weakMap, max);
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}
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// Retrieve all WeakSet instance values up to `max`. `max` limits the
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// number of key / value pairs returned. Make sure it is a positive number,
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// otherwise V8 aborts. Passing through `0` returns all elements.
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function previewWeakSet(weakSet, max) {
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return %GetWeakSetValues(weakSet, max);
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}
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module.exports = {
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previewMapIterator,
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previewSetIterator,
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previewWeakMap,
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previewWeakSet
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};
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