
Research
2025 Report: Destructive Malware in Open Source Packages
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has-symbols
Advanced tools
Determine if the JS environment has Symbol support. Supports spec, or shams.
Determine if the JS environment has Symbol support. Supports spec, or shams.
var hasSymbols = require('has-symbols');
hasSymbols() === true; // if the environment has native Symbol support. Not polyfillable, not forgeable.
var hasSymbolsKinda = require('has-symbols/shams');
hasSymbolsKinda() === true; // if the environment has a Symbol sham that mostly follows the spec.
Simply clone the repo, npm install, and run npm test
The es-abstract package provides utility functions for ECMAScript language abstract operations. It includes checks for symbol support similar to has-symbols but goes beyond that by offering a wide range of ECMAScript compliance-related utilities.
The is-symbol package is used to check if a value is an ES6 Symbol or not. While has-symbols checks for the existence of Symbol support in the environment, is-symbol is used to verify if a given value is of the Symbol type.
FAQs
Determine if the JS environment has Symbol support. Supports spec, or shams.
The npm package has-symbols receives a total of 48,429,914 weekly downloads. As such, has-symbols popularity was classified as popular.
We found that has-symbols demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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