Support arrow functions (=>)#39
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- Add Arrow token to tokenizer for '=>' syntax - Add ArrowFunctionExpr AST node - Parse arrow functions: () => expr, x => expr, (a,b) => expr - Support both expression-body and block-body arrow functions - Evaluate arrow functions by creating UserFunction with implicit return Closes #33
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Add support for arrow function expressions, one of the most commonly used features in modern JavaScript.
(a, b) => a + b(a, b) => { return a + b; }x => x * 2() => 42Changes:
=>syntaxCloses #33