add some packages

node_modules/babel-traverse/lib/path/inference/inferer-reference.js

@@ -0,0 +1,185 @@
+"use strict";
+
+exports.__esModule = true;
+
+var _getIterator2 = require("babel-runtime/core-js/get-iterator");
+
+var _getIterator3 = _interopRequireDefault(_getIterator2);
+
+exports.default = function (node) {
+  if (!this.isReferenced()) return;
+
+  var binding = this.scope.getBinding(node.name);
+  if (binding) {
+    if (binding.identifier.typeAnnotation) {
+      return binding.identifier.typeAnnotation;
+    } else {
+      return getTypeAnnotationBindingConstantViolations(this, node.name);
+    }
+  }
+
+  if (node.name === "undefined") {
+    return t.voidTypeAnnotation();
+  } else if (node.name === "NaN" || node.name === "Infinity") {
+    return t.numberTypeAnnotation();
+  } else if (node.name === "arguments") {}
+};
+
+var _babelTypes = require("babel-types");
+
+var t = _interopRequireWildcard(_babelTypes);
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function getTypeAnnotationBindingConstantViolations(path, name) {
+  var binding = path.scope.getBinding(name);
+
+  var types = [];
+  path.typeAnnotation = t.unionTypeAnnotation(types);
+
+  var functionConstantViolations = [];
+  var constantViolations = getConstantViolationsBefore(binding, path, functionConstantViolations);
+
+  var testType = getConditionalAnnotation(path, name);
+  if (testType) {
+    var testConstantViolations = getConstantViolationsBefore(binding, testType.ifStatement);
+
+    constantViolations = constantViolations.filter(function (path) {
+      return testConstantViolations.indexOf(path) < 0;
+    });
+
+    types.push(testType.typeAnnotation);
+  }
+
+  if (constantViolations.length) {
+    constantViolations = constantViolations.concat(functionConstantViolations);
+
+    for (var _iterator = constantViolations, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
+      var _ref;
+
+      if (_isArray) {
+        if (_i >= _iterator.length) break;
+        _ref = _iterator[_i++];
+      } else {
+        _i = _iterator.next();
+        if (_i.done) break;
+        _ref = _i.value;
+      }
+
+      var violation = _ref;
+
+      types.push(violation.getTypeAnnotation());
+    }
+  }
+
+  if (types.length) {
+    return t.createUnionTypeAnnotation(types);
+  }
+}
+
+function getConstantViolationsBefore(binding, path, functions) {
+  var violations = binding.constantViolations.slice();
+  violations.unshift(binding.path);
+  return violations.filter(function (violation) {
+    violation = violation.resolve();
+    var status = violation._guessExecutionStatusRelativeTo(path);
+    if (functions && status === "function") functions.push(violation);
+    return status === "before";
+  });
+}
+
+function inferAnnotationFromBinaryExpression(name, path) {
+  var operator = path.node.operator;
+
+  var right = path.get("right").resolve();
+  var left = path.get("left").resolve();
+
+  var target = void 0;
+  if (left.isIdentifier({ name: name })) {
+    target = right;
+  } else if (right.isIdentifier({ name: name })) {
+    target = left;
+  }
+  if (target) {
+    if (operator === "===") {
+      return target.getTypeAnnotation();
+    } else if (t.BOOLEAN_NUMBER_BINARY_OPERATORS.indexOf(operator) >= 0) {
+      return t.numberTypeAnnotation();
+    } else {
+      return;
+    }
+  } else {
+    if (operator !== "===") return;
+  }
+
+  var typeofPath = void 0;
+  var typePath = void 0;
+  if (left.isUnaryExpression({ operator: "typeof" })) {
+    typeofPath = left;
+    typePath = right;
+  } else if (right.isUnaryExpression({ operator: "typeof" })) {
+    typeofPath = right;
+    typePath = left;
+  }
+  if (!typePath && !typeofPath) return;
+
+  typePath = typePath.resolve();
+  if (!typePath.isLiteral()) return;
+
+  var typeValue = typePath.node.value;
+  if (typeof typeValue !== "string") return;
+
+  if (!typeofPath.get("argument").isIdentifier({ name: name })) return;
+
+  return t.createTypeAnnotationBasedOnTypeof(typePath.node.value);
+}
+
+function getParentConditionalPath(path) {
+  var parentPath = void 0;
+  while (parentPath = path.parentPath) {
+    if (parentPath.isIfStatement() || parentPath.isConditionalExpression()) {
+      if (path.key === "test") {
+        return;
+      } else {
+        return parentPath;
+      }
+    } else {
+      path = parentPath;
+    }
+  }
+}
+
+function getConditionalAnnotation(path, name) {
+  var ifStatement = getParentConditionalPath(path);
+  if (!ifStatement) return;
+
+  var test = ifStatement.get("test");
+  var paths = [test];
+  var types = [];
+
+  do {
+    var _path = paths.shift().resolve();
+
+    if (_path.isLogicalExpression()) {
+      paths.push(_path.get("left"));
+      paths.push(_path.get("right"));
+    }
+
+    if (_path.isBinaryExpression()) {
+      var type = inferAnnotationFromBinaryExpression(name, _path);
+      if (type) types.push(type);
+    }
+  } while (paths.length);
+
+  if (types.length) {
+    return {
+      typeAnnotation: t.createUnionTypeAnnotation(types),
+      ifStatement: ifStatement
+    };
+  } else {
+    return getConditionalAnnotation(ifStatement, name);
+  }
+}
+module.exports = exports["default"];