esprima

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Specs says: "*It is a Syntax Error if IsValidSimpleAssignmentTarget of IdentifierReference is false*" ### Steps to reproduce ```js esprima.parse('"use strict"; 1, { arguments } = [];') ``` ### Expected output...

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### Steps to reproduce ```js esprima.parse(''use strict'; [...eval] = a') ``` ### Expected output Should throw ### Actual output Parses an invalid AST node

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### Steps to reproduce ```js esprima.parse('with(1) b: function a(){}') ``` ### Expected output Should throw ### Actual output Parses invalid AST node

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### Steps to reproduce ```js esprima.parse('a: { continue a; }') esprima.parse('a: continue a; ') ``` ### Expected output Should throw an error ### Actual output Parses invalid AST node

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Esprima accepts invalid nested parenthesized pattern. ### Steps to reproduce ```js esprima.parse('({ src: ([dest]) } = obj)') ``` ### Expected output Throws an error ### Actual output Outputs invalid AST

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Doesn't fail on yield as parameter in sloppy mode. Does fail for strict mode, but the error message in strict mode seems to be out of context. ### Steps to...

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Any plans to implement support for JSX fragments?

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Doesn't fail on invalid unicode escape sequences in export / import

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This is for both import and export. And here is one [TC-39 reference](https://github.com/tc39/test262/blob/master/test/language/export/escaped-as-export-specifier.js) showing the issue. ### Steps to reproduce ```js esprima.parse('export {a \\u0061s b} from "./foo.js";') ``` ### Expected...

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Generator declaration not allowed in statement position ### Steps to reproduce ```js esprima.parse('label: function* g() {}') ``` ### Expected output Throw an error ### Actual output Parses invalid AST

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### Steps to reproduce ```js esprima.parse('if(1)class A{}') ``` ### Expected output Should throw an error ### Actual output Outputs an AST tree

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