stdlib-js/assert-instance-of

Test whether a value has in its prototype chain a specified constructor as a prototype property.

JavaScript

Apache License 2.0

This package provides a function to test whether a value has a specified constructor in its prototype chain, mimicking the behavior of JavaScript's `instanceof` operator. It's part of the stdlib library, which is a standard library for JavaScript and Node.js focused on numerical and scientific computing. The package is useful for developers working on projects that require robust type checking and inheritance validation.

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Support the dependencies of stdlib-js/assert-instance-of

stdlib-js/assert-has-has-instance-symbol-support

Detect native Symbol.hasInstance support.

stdlib-js/string-format

Insert supplied variable values into a format string.

stdlib-js/symbol-has-instance

Has instance symbol.

stdlib-js/error-tools-fmtprodmsg

Format an error message for production.

stdlib-js/assert-is-array

Test if a value is an array.

stdlib-js/assert-is-boolean

Test if a value is a boolean.

stdlib-js/boolean-ctor

Boolean constructor.

stdlib-js/function-ctor

Function constructor.

stdlib-js/number-ctor

Number constructor.

stdlib-js/object-ctor

Object constructor.

stdlib-js/utils-inherit

Implement prototypical inheritance by replacing the prototype of one constructor with the prototype of another constructor.

tape-testing/tape

tap-producing test harness for node and browsers

gotwarlost/istanbul

Yet another JS code coverage tool that computes statement, line, function and branch coverage with module loader hooks to transparently add coverage when running tests. Supports all JS coverage use cases including unit tests, server side functional tests and browser tests. Built for scale