“use strict”;

Object.defineProperty(exports, “__esModule”, {

value: true

}); exports.default = void 0;

function _helperPluginUtils() {

const data = require("@babel/helper-plugin-utils");

_helperPluginUtils = function () {
  return data;
};

return data;

}

function _pluginSyntaxObjectRestSpread() {

const data = _interopRequireDefault(require("@babel/plugin-syntax-object-rest-spread"));

_pluginSyntaxObjectRestSpread = function () {
  return data;
};

return data;

}

function _core() {

const data = require("@babel/core");

_core = function () {
  return data;
};

return data;

}

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const ZERO_REFS = (() => {

const node = _core().types.identifier("a");

const property = _core().types.objectProperty(_core().types.identifier("key"), node);

const pattern = _core().types.objectPattern([property]);

return _core().types.isReferenced(node, property, pattern) ? 1 : 0;

})();

var _default = (0, _helperPluginUtils().declare)((api, opts) => {

api.assertVersion(7);
const {
  useBuiltIns = false,
  loose = false
} = opts;

if (typeof loose !== "boolean") {
  throw new Error(".loose must be a boolean, or undefined");
}

function getExtendsHelper(file) {
  return useBuiltIns ? _core().types.memberExpression(_core().types.identifier("Object"), _core().types.identifier("assign")) : file.addHelper("extends");
}

function hasRestElement(path) {
  let foundRestElement = false;
  visitRestElements(path, restElement => {
    foundRestElement = true;
    restElement.stop();
  });
  return foundRestElement;
}

function hasObjectPatternRestElement(path) {
  let foundRestElement = false;
  visitRestElements(path, restElement => {
    if (restElement.parentPath.isObjectPattern()) {
      foundRestElement = true;
      restElement.stop();
    }
  });
  return foundRestElement;
}

function visitRestElements(path, visitor) {
  path.traverse({
    Expression(path) {
      const parentType = path.parent.type;

      if (parentType === "AssignmentPattern" && path.key === "right" || parentType === "ObjectProperty" && path.parent.computed && path.key === "key") {
        path.skip();
      }
    },

    RestElement: visitor
  });
}

function hasSpread(node) {
  for (const prop of node.properties) {
    if (_core().types.isSpreadElement(prop)) {
      return true;
    }
  }

  return false;
}

function extractNormalizedKeys(path) {
  const props = path.node.properties;
  const keys = [];
  let allLiteral = true;

  for (const prop of props) {
    if (_core().types.isIdentifier(prop.key) && !prop.computed) {
      keys.push(_core().types.stringLiteral(prop.key.name));
    } else if (_core().types.isTemplateLiteral(prop.key)) {
      keys.push(_core().types.cloneNode(prop.key));
    } else if (_core().types.isLiteral(prop.key)) {
      keys.push(_core().types.stringLiteral(String(prop.key.value)));
    } else {
      keys.push(_core().types.cloneNode(prop.key));
      allLiteral = false;
    }
  }

  return {
    keys,
    allLiteral
  };
}

function replaceImpureComputedKeys(path) {
  const impureComputedPropertyDeclarators = [];

  for (const propPath of path.get("properties")) {
    const key = propPath.get("key");

    if (propPath.node.computed && !key.isPure()) {
      const name = path.scope.generateUidBasedOnNode(key.node);

      const declarator = _core().types.variableDeclarator(_core().types.identifier(name), key.node);

      impureComputedPropertyDeclarators.push(declarator);
      key.replaceWith(_core().types.identifier(name));
    }
  }

  return impureComputedPropertyDeclarators;
}

function removeUnusedExcludedKeys(path) {
  const bindings = path.getOuterBindingIdentifierPaths();
  Object.keys(bindings).forEach(bindingName => {
    const bindingParentPath = bindings[bindingName].parentPath;

    if (path.scope.getBinding(bindingName).references > ZERO_REFS || !bindingParentPath.isObjectProperty()) {
      return;
    }

    bindingParentPath.remove();
  });
}

function createObjectSpread(path, file, objRef) {
  const props = path.get("properties");
  const last = props[props.length - 1];

  _core().types.assertRestElement(last.node);

  const restElement = _core().types.cloneNode(last.node);

  last.remove();
  const impureComputedPropertyDeclarators = replaceImpureComputedKeys(path);
  const {
    keys,
    allLiteral
  } = extractNormalizedKeys(path);

  if (keys.length === 0) {
    return [impureComputedPropertyDeclarators, restElement.argument, _core().types.callExpression(getExtendsHelper(file), [_core().types.objectExpression([]), _core().types.cloneNode(objRef)])];
  }

  let keyExpression;

  if (!allLiteral) {
    keyExpression = _core().types.callExpression(_core().types.memberExpression(_core().types.arrayExpression(keys), _core().types.identifier("map")), [file.addHelper("toPropertyKey")]);
  } else {
    keyExpression = _core().types.arrayExpression(keys);
  }

  return [impureComputedPropertyDeclarators, restElement.argument, _core().types.callExpression(file.addHelper(`objectWithoutProperties${loose ? "Loose" : ""}`), [_core().types.cloneNode(objRef), keyExpression])];
}

function replaceRestElement(parentPath, paramPath) {
  if (paramPath.isAssignmentPattern()) {
    replaceRestElement(parentPath, paramPath.get("left"));
    return;
  }

  if (paramPath.isArrayPattern() && hasRestElement(paramPath)) {
    const elements = paramPath.get("elements");

    for (let i = 0; i < elements.length; i++) {
      replaceRestElement(parentPath, elements[i]);
    }
  }

  if (paramPath.isObjectPattern() && hasRestElement(paramPath)) {
    const uid = parentPath.scope.generateUidIdentifier("ref");

    const declar = _core().types.variableDeclaration("let", [_core().types.variableDeclarator(paramPath.node, uid)]);

    parentPath.ensureBlock();
    parentPath.get("body").unshiftContainer("body", declar);
    paramPath.replaceWith(_core().types.cloneNode(uid));
  }
}

return {
  name: "proposal-object-rest-spread",
  inherits: _pluginSyntaxObjectRestSpread().default,
  visitor: {
    Function(path) {
      const params = path.get("params");

      for (let i = params.length - 1; i >= 0; i--) {
        replaceRestElement(params[i].parentPath, params[i]);
      }
    },

    VariableDeclarator(path, file) {
      if (!path.get("id").isObjectPattern()) {
        return;
      }

      let insertionPath = path;
      const originalPath = path;
      visitRestElements(path.get("id"), path => {
        if (!path.parentPath.isObjectPattern()) {
          return;
        }

        if (originalPath.node.id.properties.length > 1 && !_core().types.isIdentifier(originalPath.node.init)) {
          const initRef = path.scope.generateUidIdentifierBasedOnNode(originalPath.node.init, "ref");
          originalPath.insertBefore(_core().types.variableDeclarator(initRef, originalPath.node.init));
          originalPath.replaceWith(_core().types.variableDeclarator(originalPath.node.id, _core().types.cloneNode(initRef)));
          return;
        }

        let ref = originalPath.node.init;
        const refPropertyPath = [];
        let kind;
        path.findParent(path => {
          if (path.isObjectProperty()) {
            refPropertyPath.unshift(path.node.key.name);
          } else if (path.isVariableDeclarator()) {
            kind = path.parentPath.node.kind;
            return true;
          }
        });

        if (refPropertyPath.length) {
          refPropertyPath.forEach(prop => {
            ref = _core().types.memberExpression(ref, _core().types.identifier(prop));
          });
        }

        const objectPatternPath = path.findParent(path => path.isObjectPattern());
        const [impureComputedPropertyDeclarators, argument, callExpression] = createObjectSpread(objectPatternPath, file, ref);

        if (loose) {
          removeUnusedExcludedKeys(objectPatternPath);
        }

        _core().types.assertIdentifier(argument);

        insertionPath.insertBefore(impureComputedPropertyDeclarators);
        insertionPath.insertAfter(_core().types.variableDeclarator(argument, callExpression));
        insertionPath = insertionPath.getSibling(insertionPath.key + 1);
        path.scope.registerBinding(kind, insertionPath);

        if (objectPatternPath.node.properties.length === 0) {
          objectPatternPath.findParent(path => path.isObjectProperty() || path.isVariableDeclarator()).remove();
        }
      });
    },

    ExportNamedDeclaration(path) {
      const declaration = path.get("declaration");
      if (!declaration.isVariableDeclaration()) return;
      const hasRest = declaration.get("declarations").some(path => hasRestElement(path.get("id")));
      if (!hasRest) return;
      const specifiers = [];

      for (const name of Object.keys(path.getOuterBindingIdentifiers(path))) {
        specifiers.push(_core().types.exportSpecifier(_core().types.identifier(name), _core().types.identifier(name)));
      }

      path.replaceWith(declaration.node);
      path.insertAfter(_core().types.exportNamedDeclaration(null, specifiers));
    },

    CatchClause(path) {
      const paramPath = path.get("param");
      replaceRestElement(paramPath.parentPath, paramPath);
    },

    AssignmentExpression(path, file) {
      const leftPath = path.get("left");

      if (leftPath.isObjectPattern() && hasRestElement(leftPath)) {
        const nodes = [];
        const refName = path.scope.generateUidBasedOnNode(path.node.right, "ref");
        nodes.push(_core().types.variableDeclaration("var", [_core().types.variableDeclarator(_core().types.identifier(refName), path.node.right)]));
        const [impureComputedPropertyDeclarators, argument, callExpression] = createObjectSpread(leftPath, file, _core().types.identifier(refName));

        if (impureComputedPropertyDeclarators.length > 0) {
          nodes.push(_core().types.variableDeclaration("var", impureComputedPropertyDeclarators));
        }

        const nodeWithoutSpread = _core().types.cloneNode(path.node);

        nodeWithoutSpread.right = _core().types.identifier(refName);
        nodes.push(_core().types.expressionStatement(nodeWithoutSpread));
        nodes.push(_core().types.toStatement(_core().types.assignmentExpression("=", argument, callExpression)));
        nodes.push(_core().types.expressionStatement(_core().types.identifier(refName)));
        path.replaceWithMultiple(nodes);
      }
    },

    ForXStatement(path) {
      const {
        node,
        scope
      } = path;
      const leftPath = path.get("left");
      const left = node.left;

      if (!hasObjectPatternRestElement(leftPath)) {
        return;
      }

      if (!_core().types.isVariableDeclaration(left)) {
        const temp = scope.generateUidIdentifier("ref");
        node.left = _core().types.variableDeclaration("var", [_core().types.variableDeclarator(temp)]);
        path.ensureBlock();

        if (node.body.body.length === 0 && path.isCompletionRecord()) {
          node.body.body.unshift(_core().types.expressionStatement(scope.buildUndefinedNode()));
        }

        node.body.body.unshift(_core().types.expressionStatement(_core().types.assignmentExpression("=", left, _core().types.cloneNode(temp))));
      } else {
        const pattern = left.declarations[0].id;
        const key = scope.generateUidIdentifier("ref");
        node.left = _core().types.variableDeclaration(left.kind, [_core().types.variableDeclarator(key, null)]);
        path.ensureBlock();
        node.body.body.unshift(_core().types.variableDeclaration(node.left.kind, [_core().types.variableDeclarator(pattern, _core().types.cloneNode(key))]));
      }
    },

    ArrayPattern(path) {
      const objectPatterns = [];
      visitRestElements(path, path => {
        if (!path.parentPath.isObjectPattern()) {
          return;
        }

        const objectPattern = path.parentPath;
        const uid = path.scope.generateUidIdentifier("ref");
        objectPatterns.push(_core().types.variableDeclarator(objectPattern.node, uid));
        objectPattern.replaceWith(_core().types.cloneNode(uid));
        path.skip();
      });

      if (objectPatterns.length > 0) {
        const statementPath = path.getStatementParent();
        statementPath.insertAfter(_core().types.variableDeclaration(statementPath.node.kind || "var", objectPatterns));
      }
    },

    ObjectExpression(path, file) {
      if (!hasSpread(path.node)) return;
      const args = [];
      let props = [];

      function push() {
        args.push(_core().types.objectExpression(props));
        props = [];
      }

      for (const prop of path.node.properties) {
        if (_core().types.isSpreadElement(prop)) {
          push();
          args.push(prop.argument);
        } else {
          props.push(prop);
        }
      }

      if (props.length) {
        push();
      }

      let helper;

      if (loose) {
        helper = getExtendsHelper(file);
      } else {
        try {
          helper = file.addHelper("objectSpread2");
        } catch (_unused) {
          this.file.declarations["objectSpread2"] = null;
          helper = file.addHelper("objectSpread");
        }
      }

      path.replaceWith(_core().types.callExpression(helper, args));
    }

  }
};

});

exports.default = _default;