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							68 lines
						
					
					
						
							1.7 KiB
						
					
					
				
			
		
		
	
	
							68 lines
						
					
					
						
							1.7 KiB
						
					
					
				"use strict"; | 
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 | 
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Object.defineProperty(exports, "__esModule", { | 
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  value: true | 
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}); | 
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exports.default = void 0; | 
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 | 
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var _helperPluginUtils = require("@babel/helper-plugin-utils"); | 
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 | 
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var _pluginSyntaxLogicalAssignmentOperators = require("@babel/plugin-syntax-logical-assignment-operators"); | 
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 | 
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var _core = require("@babel/core"); | 
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 | 
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var _default = (0, _helperPluginUtils.declare)(api => { | 
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  api.assertVersion(7); | 
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  return { | 
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    name: "proposal-logical-assignment-operators", | 
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    inherits: _pluginSyntaxLogicalAssignmentOperators.default, | 
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    visitor: { | 
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      AssignmentExpression(path) { | 
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        const { | 
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          node, | 
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          scope | 
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        } = path; | 
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        const { | 
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          operator, | 
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          left, | 
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          right | 
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        } = node; | 
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        const operatorTrunc = operator.slice(0, -1); | 
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 | 
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        if (!_core.types.LOGICAL_OPERATORS.includes(operatorTrunc)) { | 
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          return; | 
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        } | 
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 | 
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        const lhs = _core.types.cloneNode(left); | 
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 | 
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        if (_core.types.isMemberExpression(left)) { | 
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          const { | 
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            object, | 
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            property, | 
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            computed | 
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          } = left; | 
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          const memo = scope.maybeGenerateMemoised(object); | 
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 | 
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          if (memo) { | 
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            left.object = memo; | 
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            lhs.object = _core.types.assignmentExpression("=", _core.types.cloneNode(memo), object); | 
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          } | 
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 | 
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          if (computed) { | 
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            const memo = scope.maybeGenerateMemoised(property); | 
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 | 
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            if (memo) { | 
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              left.property = memo; | 
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              lhs.property = _core.types.assignmentExpression("=", _core.types.cloneNode(memo), property); | 
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            } | 
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          } | 
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        } | 
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 | 
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        path.replaceWith(_core.types.logicalExpression(operatorTrunc, lhs, _core.types.assignmentExpression("=", left, right))); | 
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      } | 
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 | 
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    } | 
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  }; | 
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}); | 
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 | 
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exports.default = _default; |