Proposal Throw Expressions

Overview:

The ECMAScript throw expressions proposal introduces new syntax to throw exceptions from within an expression context. This proposal is at Stage 2 and is championed by Ron Buckton. It allows for throwing exceptions in various expression contexts like parameter initializers, arrow function bodies, conditional expressions, and logical operations. The proposal ensures that the precedence of throw expressions is maintained by placing restrictions on certain operators to the right of the expression.

Features:

• Throw Expression in Expression Context: Allows throwing exceptions in various expression contexts.
• Precedence Maintenance: Ensures precedence of throw expression over certain operators.
• Avoids Ambiguity: Forbids certain operators to the right of throw expression for clarity.

Summary:

The ECMAScript throw expressions proposal provides a new way to throw exceptions within expression contexts in JavaScript. By adding syntax for throw expressions and ensuring precedence is maintained, this proposal aims to enhance the language's capabilities and provide more flexibility for developers. While still in the proposal stage, the introduction of throw expressions addresses certain limitations and introduces a more robust error-throwing mechanism in ECMAScript.