diff options
Diffstat (limited to 'node_modules/babel-plugin-transform-class-properties/lib')
| -rw-r--r-- | node_modules/babel-plugin-transform-class-properties/lib/index.js | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/node_modules/babel-plugin-transform-class-properties/lib/index.js b/node_modules/babel-plugin-transform-class-properties/lib/index.js new file mode 100644 index 0000000..579bc06 --- /dev/null +++ b/node_modules/babel-plugin-transform-class-properties/lib/index.js @@ -0,0 +1,252 @@ +"use strict"; + +exports.__esModule = true; + +var _getIterator2 = require("babel-runtime/core-js/get-iterator"); + +var _getIterator3 = _interopRequireDefault(_getIterator2); + +exports.default = function (_ref) { + var t = _ref.types; + + var findBareSupers = { + Super: function Super(path) { + if (path.parentPath.isCallExpression({ callee: path.node })) { + this.push(path.parentPath); + } + } + }; + + var referenceVisitor = { + ReferencedIdentifier: function ReferencedIdentifier(path) { + if (this.scope.hasOwnBinding(path.node.name)) { + this.collision = true; + path.skip(); + } + } + }; + + var buildObjectDefineProperty = (0, _babelTemplate2.default)("\n Object.defineProperty(REF, KEY, {\n // configurable is false by default\n enumerable: true,\n writable: true,\n value: VALUE\n });\n "); + + var buildClassPropertySpec = function buildClassPropertySpec(ref, _ref2) { + var key = _ref2.key, + value = _ref2.value, + computed = _ref2.computed; + return buildObjectDefineProperty({ + REF: ref, + KEY: t.isIdentifier(key) && !computed ? t.stringLiteral(key.name) : key, + VALUE: value ? value : t.identifier("undefined") + }); + }; + + var buildClassPropertyNonSpec = function buildClassPropertyNonSpec(ref, _ref3) { + var key = _ref3.key, + value = _ref3.value, + computed = _ref3.computed; + return t.expressionStatement(t.assignmentExpression("=", t.memberExpression(ref, key, computed || t.isLiteral(key)), value)); + }; + + return { + inherits: require("babel-plugin-syntax-class-properties"), + + visitor: { + Class: function Class(path, state) { + var buildClassProperty = state.opts.spec ? buildClassPropertySpec : buildClassPropertyNonSpec; + var isDerived = !!path.node.superClass; + var constructor = void 0; + var props = []; + var body = path.get("body"); + + for (var _iterator = body.get("body"), _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) { + var _ref4; + + if (_isArray) { + if (_i >= _iterator.length) break; + _ref4 = _iterator[_i++]; + } else { + _i = _iterator.next(); + if (_i.done) break; + _ref4 = _i.value; + } + + var _path = _ref4; + + if (_path.isClassProperty()) { + props.push(_path); + } else if (_path.isClassMethod({ kind: "constructor" })) { + constructor = _path; + } + } + + if (!props.length) return; + + var nodes = []; + var ref = void 0; + + if (path.isClassExpression() || !path.node.id) { + (0, _babelHelperFunctionName2.default)(path); + ref = path.scope.generateUidIdentifier("class"); + } else { + ref = path.node.id; + } + + var instanceBody = []; + + for (var _iterator2 = props, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : (0, _getIterator3.default)(_iterator2);;) { + var _ref5; + + if (_isArray2) { + if (_i2 >= _iterator2.length) break; + _ref5 = _iterator2[_i2++]; + } else { + _i2 = _iterator2.next(); + if (_i2.done) break; + _ref5 = _i2.value; + } + + var _prop = _ref5; + + var propNode = _prop.node; + if (propNode.decorators && propNode.decorators.length > 0) continue; + + if (!state.opts.spec && !propNode.value) continue; + + var isStatic = propNode.static; + + if (isStatic) { + nodes.push(buildClassProperty(ref, propNode)); + } else { + if (!propNode.value) continue; + instanceBody.push(buildClassProperty(t.thisExpression(), propNode)); + } + } + + if (instanceBody.length) { + if (!constructor) { + var newConstructor = t.classMethod("constructor", t.identifier("constructor"), [], t.blockStatement([])); + if (isDerived) { + newConstructor.params = [t.restElement(t.identifier("args"))]; + newConstructor.body.body.push(t.returnStatement(t.callExpression(t.super(), [t.spreadElement(t.identifier("args"))]))); + } + + var _body$unshiftContaine = body.unshiftContainer("body", newConstructor); + + constructor = _body$unshiftContaine[0]; + } + + var collisionState = { + collision: false, + scope: constructor.scope + }; + + for (var _iterator3 = props, _isArray3 = Array.isArray(_iterator3), _i3 = 0, _iterator3 = _isArray3 ? _iterator3 : (0, _getIterator3.default)(_iterator3);;) { + var _ref6; + + if (_isArray3) { + if (_i3 >= _iterator3.length) break; + _ref6 = _iterator3[_i3++]; + } else { + _i3 = _iterator3.next(); + if (_i3.done) break; + _ref6 = _i3.value; + } + + var prop = _ref6; + + prop.traverse(referenceVisitor, collisionState); + if (collisionState.collision) break; + } + + if (collisionState.collision) { + var initialisePropsRef = path.scope.generateUidIdentifier("initialiseProps"); + + nodes.push(t.variableDeclaration("var", [t.variableDeclarator(initialisePropsRef, t.functionExpression(null, [], t.blockStatement(instanceBody)))])); + + instanceBody = [t.expressionStatement(t.callExpression(t.memberExpression(initialisePropsRef, t.identifier("call")), [t.thisExpression()]))]; + } + + if (isDerived) { + var bareSupers = []; + constructor.traverse(findBareSupers, bareSupers); + for (var _iterator4 = bareSupers, _isArray4 = Array.isArray(_iterator4), _i4 = 0, _iterator4 = _isArray4 ? _iterator4 : (0, _getIterator3.default)(_iterator4);;) { + var _ref7; + + if (_isArray4) { + if (_i4 >= _iterator4.length) break; + _ref7 = _iterator4[_i4++]; + } else { + _i4 = _iterator4.next(); + if (_i4.done) break; + _ref7 = _i4.value; + } + + var bareSuper = _ref7; + + bareSuper.insertAfter(instanceBody); + } + } else { + constructor.get("body").unshiftContainer("body", instanceBody); + } + } + + for (var _iterator5 = props, _isArray5 = Array.isArray(_iterator5), _i5 = 0, _iterator5 = _isArray5 ? _iterator5 : (0, _getIterator3.default)(_iterator5);;) { + var _ref8; + + if (_isArray5) { + if (_i5 >= _iterator5.length) break; + _ref8 = _iterator5[_i5++]; + } else { + _i5 = _iterator5.next(); + if (_i5.done) break; + _ref8 = _i5.value; + } + + var _prop2 = _ref8; + + _prop2.remove(); + } + + if (!nodes.length) return; + + if (path.isClassExpression()) { + path.scope.push({ id: ref }); + path.replaceWith(t.assignmentExpression("=", ref, path.node)); + } else { + if (!path.node.id) { + path.node.id = ref; + } + + if (path.parentPath.isExportDeclaration()) { + path = path.parentPath; + } + } + + path.insertAfter(nodes); + }, + ArrowFunctionExpression: function ArrowFunctionExpression(path) { + var classExp = path.get("body"); + if (!classExp.isClassExpression()) return; + + var body = classExp.get("body"); + var members = body.get("body"); + if (members.some(function (member) { + return member.isClassProperty(); + })) { + path.ensureBlock(); + } + } + } + }; +}; + +var _babelHelperFunctionName = require("babel-helper-function-name"); + +var _babelHelperFunctionName2 = _interopRequireDefault(_babelHelperFunctionName); + +var _babelTemplate = require("babel-template"); + +var _babelTemplate2 = _interopRequireDefault(_babelTemplate); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +module.exports = exports["default"];
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