Strict error handling in JavaScript with a functional try

https://github.com/craigmichaelmartin/inline-try

by ckmar • 3 years ago

1 1 3 years ago

ckmar• 3 years ago

One line of code which is specific in what it catches:

    // Either foo or someError will be defined
    const [foo, someError] = itry(someFn, SomeError);

Instead of nine lines which feel like they are working uphill against the language: dealing with variable scoping issues, deeper nesting, and footguns like forgetting to re-throw.

    let foo;
    try {
      foo = someFn();
    } catch (err) {
      if (err instanceof SomeError) {
        // do something with error
      } else {
        throw err;
      }
    }
    // use foo

Strict error handling in JavaScript with a functional try

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