@babel/helper-bindify-decorators/lib/index.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = bindifyDecorators;

var t = _interopRequireWildcard(require("@babel/types"));

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function bindifyDecorators(decorators) {
  for (const decoratorPath of decorators) {
    const decorator = decoratorPath.node;
    const expression = decorator.expression;
    if (!t.isMemberExpression(expression)) continue;
    const temp = decoratorPath.scope.maybeGenerateMemoised(expression.object);
    let ref;
    const nodes = [];

    if (temp) {
      ref = temp;
      nodes.push(t.assignmentExpression("=", temp, expression.object));
    } else {
      ref = expression.object;
    }

    nodes.push(t.callExpression(t.memberExpression(t.memberExpression(ref, expression.property, expression.computed), t.identifier("bind")), [ref]));

    if (nodes.length === 1) {
      decorator.expression = nodes[0];
    } else {
      decorator.expression = t.sequenceExpression(nodes);
    }
  }
}