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Fix: Convert Void and Delete expressions to UnaryExpression (fixes #171) #174

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Feb 26, 2017
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Fix: Convert Void and Delete expressions to UnaryExpression (fixes #171) #174

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18 changes: 18 additions & 0 deletions lib/ast-converter.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1653,6 +1653,24 @@ module.exports = function(ast, extra) {
});
break;

case SyntaxKind.DeleteExpression:
assign(result, {
type: "UnaryExpression",
operator: "delete",
prefix: true,
argument: convertChild(node.expression)
});
break;

case SyntaxKind.VoidExpression:
assign(result, {
type: "UnaryExpression",
operator: "void",
prefix: true,
argument: convertChild(node.expression)
});
break;

case SyntaxKind.TypeOfExpression:
assign(result, {
type: "UnaryExpression",
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202 changes: 202 additions & 0 deletions tests/fixtures/basics/delete-expression.result.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,202 @@
module.exports = {
"type": "Program",
"range": [
0,
15
],
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 15
}
},
"body": [
{
"type": "ExpressionStatement",
"range": [
0,
15
],
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 15
}
},
"expression": {
"type": "UnaryExpression",
"range": [
0,
14
],
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 14
}
},
"operator": "delete",
"prefix": true,
"argument": {
"type": "MemberExpression",
"range": [
7,
14
],
"loc": {
"start": {
"line": 1,
"column": 7
},
"end": {
"line": 1,
"column": 14
}
},
"object": {
"type": "Identifier",
"range": [
7,
10
],
"loc": {
"start": {
"line": 1,
"column": 7
},
"end": {
"line": 1,
"column": 10
}
},
"name": "foo"
},
"property": {
"type": "Identifier",
"range": [
11,
14
],
"loc": {
"start": {
"line": 1,
"column": 11
},
"end": {
"line": 1,
"column": 14
}
},
"name": "bar"
},
"computed": false
}
}
}
],
"sourceType": "script",
"tokens": [
{
"type": "Keyword",
"value": "delete",
"range": [
0,
6
],
"loc": {
"start": {
"line": 1,
"column": 0
},
"end": {
"line": 1,
"column": 6
}
}
},
{
"type": "Identifier",
"value": "foo",
"range": [
7,
10
],
"loc": {
"start": {
"line": 1,
"column": 7
},
"end": {
"line": 1,
"column": 10
}
}
},
{
"type": "Punctuator",
"value": ".",
"range": [
10,
11
],
"loc": {
"start": {
"line": 1,
"column": 10
},
"end": {
"line": 1,
"column": 11
}
}
},
{
"type": "Identifier",
"value": "bar",
"range": [
11,
14
],
"loc": {
"start": {
"line": 1,
"column": 11
},
"end": {
"line": 1,
"column": 14
}
}
},
{
"type": "Punctuator",
"value": ";",
"range": [
14,
15
],
"loc": {
"start": {
"line": 1,
"column": 14
},
"end": {
"line": 1,
"column": 15
}
}
}
]
};
1 change: 1 addition & 0 deletions tests/fixtures/basics/delete-expression.src.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
delete foo.bar;
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