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Do any test frameworks support tests that use the new ES Modules syntax? I have a JS application which heavily uses .mjs files with ES Modules. I tried Jest and Jasmine, both of which throw errors when I try to write run tests for my app. I need to test this file:
math.mjs
export function add(a, b) {
return a + b;
}
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Jest ships with experimental support for ECMAScript Modules (ESM).
Jest is also faster than Mocha. It has built-in support for snapshot testing, which means tests are run automatically on each change to the code. This makes it easy to keep your tests up to date as you work. Mocha has more features out of the box since it is a more mature tool with a larger community of contributors.
ES modules are the standard for JavaScript, while CommonJS is the default in Node. js. The ES module format was created to standardize the JavaScript module system. It has become the standard format for encapsulating JavaScript code for reuse. The CommonJS module system, on the other hand, is built into Node.
Other test runners with support for ES Modules are:
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