You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
49 lines
2.2 KiB
49 lines
2.2 KiB
"use strict"; |
|
|
|
Object.defineProperty(exports, "__esModule", { |
|
value: true |
|
}); |
|
exports.default = void 0; |
|
var _helperPluginUtils = require("@babel/helper-plugin-utils"); |
|
var _core = require("@babel/core"); |
|
var _default = exports.default = (0, _helperPluginUtils.declare)((api, { |
|
loose = false |
|
}) => { |
|
var _api$assumption, _api$assumption2; |
|
api.assertVersion("^7.0.0-0 || ^8.0.0-0 || >8.0.0-alpha <8.0.0-beta"); |
|
const noDocumentAll = (_api$assumption = api.assumption("noDocumentAll")) != null ? _api$assumption : loose; |
|
const pureGetters = (_api$assumption2 = api.assumption("pureGetters")) != null ? _api$assumption2 : false; |
|
return { |
|
name: "transform-nullish-coalescing-operator", |
|
manipulateOptions: (_, parser) => parser.plugins.push("nullishCoalescingOperator"), |
|
visitor: { |
|
LogicalExpression(path) { |
|
const { |
|
node, |
|
scope |
|
} = path; |
|
if (node.operator !== "??") { |
|
return; |
|
} |
|
let ref; |
|
let assignment; |
|
if (pureGetters && scope.path.isPattern() && _core.types.isMemberExpression(node.left) && !node.left.computed && _core.types.isIdentifier(node.left.object) && _core.types.isIdentifier(node.left.property) || _core.types.isIdentifier(node.left) && (pureGetters || scope.hasBinding(node.left.name))) { |
|
ref = node.left; |
|
assignment = _core.types.cloneNode(node.left); |
|
} else if (scope.path.isPattern()) { |
|
path.replaceWith(_core.template.statement.ast`(() => ${path.node})()`); |
|
return; |
|
} else { |
|
ref = scope.generateUidIdentifierBasedOnNode(node.left); |
|
scope.push({ |
|
id: _core.types.cloneNode(ref) |
|
}); |
|
assignment = _core.types.assignmentExpression("=", ref, node.left); |
|
} |
|
path.replaceWith(_core.types.conditionalExpression(noDocumentAll ? _core.types.binaryExpression("!=", assignment, _core.types.nullLiteral()) : _core.types.logicalExpression("&&", _core.types.binaryExpression("!==", assignment, _core.types.nullLiteral()), _core.types.binaryExpression("!==", _core.types.cloneNode(ref), scope.buildUndefinedNode())), _core.types.cloneNode(ref), node.right)); |
|
} |
|
} |
|
}; |
|
}); |
|
|
|
//# sourceMappingURL=index.js.map
|
|
|