| 1 | ;
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| 2 |
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| 3 | const THIS_BREAK_KEYS = [ 'FunctionExpression', 'FunctionDeclaration', 'ClassProperty',
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| 4 | 'ClassMethod', 'ObjectMethod' ];
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| 5 |
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| 6 | // Walk the AST looking for 'this' references intended to be references to global
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| 7 | // Replace them with an explicit 'global' reference
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| 8 | module.exports = function (_ref) {
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| 9 | const t = _ref.types;
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| 10 | return {
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| 11 | visitor: {
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| 12 | ThisExpression(path, state) {
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| 13 | if (
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| 14 | state.opts.allowTopLevelThis !== true
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| 15 | && !path.findParent((path) => !path.is('shadow')
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| 16 | && THIS_BREAK_KEYS.indexOf(path.type) >= 0)
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| 17 | ) {
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| 18 | // TODO: Spit out a warning/deprecation notice?
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| 19 | path.replaceWith(t.identifier('global'));
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| 20 | }
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| 21 | }
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| 22 | }
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| 23 | };
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| 24 | };
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