ecmascript 0.2.0

A rust implementation of an ECMAScript parser
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                        "id": {
                            "type": "Identifier",
                            "name": "hi",
                            "range": [
                                21,
                                23
                            ],
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                                "end": {
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                        },
                        "params": [],
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                                            "name": "sayHi",
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    "sourceType": "script",
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