Get and robustly cache all JS language-level intrinsics at first require time
Is this value a JS WeakMap? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Helper function for exhaustive checks of discriminated unions in TypeScript
A querystring parser that supports nesting and arrays, with a depth limit
parse SPDX license expressions
Returns true if a value has the characteristics of a valid JavaScript data descriptor.
Does this JS environment support the `name` property on functions?
ES6 spec-compliant RegExp.prototype.flags shim.
escape Markdown control characters
Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Store information about any JS value in a side channel, using a Map
Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.
Store information about any JS value in a side channel, using a linked list
test whether SPDX expressions satisfy licensing criteria
Is this value negative zero? === will lie to you
Is this value a JS Number object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Unbox a boxed JS primitive value.
Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Resolve npm package details, like name and base path, given an absolute path to a file inside a package
Get the ArrayBuffer out of a TypedArray, robustly.
`Array.prototype.concat`, but made safe by ignoring Symbol.isConcatSpreadable
Is this value a JS WeakRef? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Featherweight assert module
Store information about any JS value in a side channel. Uses WeakMap if available.