mirror of https://github.com/jkjoy/sunpeiwen.git
61 lines
1.8 KiB
JavaScript
61 lines
1.8 KiB
JavaScript
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"use strict";
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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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var _helperPluginUtils = require("@babel/helper-plugin-utils");
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var _pluginSyntaxLogicalAssignmentOperators = require("@babel/plugin-syntax-logical-assignment-operators");
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var _core = require("@babel/core");
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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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if (!_core.types.LOGICAL_OPERATORS.includes(operatorTrunc)) {
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return;
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}
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const lhs = _core.types.cloneNode(left);
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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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if (memo) {
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left.object = memo;
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lhs.object = _core.types.assignmentExpression("=", _core.types.cloneNode(memo),
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object);
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}
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if (computed) {
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const memo = scope.maybeGenerateMemoised(property);
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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),
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property);
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}
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}
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}
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path.replaceWith(_core.types.logicalExpression(
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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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exports.default = _default;
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//# sourceMappingURL=index.js.map
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