Constant E0003_EXPECTED_BINDING_AFTER_LET 

pub const E0003_EXPECTED_BINDING_AFTER_LET: ErrorCode;

E0003: Expected binding after let

A let statement must include a binding, like let x = ....

• ✅ Add a variable name (e.g., let x = 5;) or a destructuring pattern (e.g., let { a, b } = obj;).

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Example of erroneous code

let = 5;

// autogenerated

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Explanation

A let statement introduces a new binding and must follow this form:

let pattern = expression;

The pattern is required — it determines where the value of the expression is stored. It can be:

• a variable name: let x = 5;
• a mutable variable: let mut x = 5;
• a destructuring pattern: let (a, b) = tuple;, let { a } = obj;

If you omit the pattern, as in let = 5, the language doesn’t know what to bind the value to.

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Fixes

✅ Add a binding name:

let x = 5;

✅ Use a destructuring pattern:

let { a, b } = some_object;

✅ Use mut if mutation is needed:

let mut count = 10;
count = 20;