Rule: no-string-throw

Flags throwing plain strings or concatenations of strings.

Rationale

Example – Doing it right

// throwing an Error from typical function, whether sync or async
if (!productToAdd) {
    throw new Error("How can I add new product when no value provided?");
}

Example – Anti Pattern

// throwing a string lacks any stack trace information and other important data properties
if (!productToAdd) {
    throw ("How can I add new product when no value provided?");
}

Only Error objects contain a .stack member equivalent to the current stack trace. Primitives such as strings do not.

Notes:

Has Fixer

Config

Not configurable.

Config examples

"no-string-throw": true

Schema

null

Code examples:

Flags throwing plain strings or concatenations of strings.

"rules": { "no-string-throw": true }

Passes

try {
    // ...
} catch (e) {
    throw e;
}

Fails

try {
    // ...
} catch {
    throw 'There was a problem.';
}