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node_modules/@babel/plugin-transform-for-of/lib/no-helper-implementation.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = transformWithoutHelper;
+var _core = require("@babel/core");
+function transformWithoutHelper(loose, path, state) {
+  const pushComputedProps = loose ? pushComputedPropsLoose : pushComputedPropsSpec;
+  const {
+    node
+  } = path;
+  const build = pushComputedProps(path, state);
+  const declar = build.declar;
+  const loop = build.loop;
+  const block = loop.body;
+  path.ensureBlock();
+  if (declar) {
+    block.body.push(declar);
+  }
+  block.body.push(...node.body.body);
+  _core.types.inherits(loop, node);
+  _core.types.inherits(loop.body, node.body);
+  if (build.replaceParent) {
+    path.parentPath.replaceWithMultiple(build.node);
+    path.remove();
+  } else {
+    path.replaceWithMultiple(build.node);
+  }
+}
+const buildForOfLoose = _core.template.statement(`
+  for (var LOOP_OBJECT = OBJECT,
+          IS_ARRAY = Array.isArray(LOOP_OBJECT),
+          INDEX = 0,
+          LOOP_OBJECT = IS_ARRAY ? LOOP_OBJECT : LOOP_OBJECT[Symbol.iterator]();;) {
+    INTERMEDIATE;
+    if (IS_ARRAY) {
+      if (INDEX >= LOOP_OBJECT.length) break;
+      ID = LOOP_OBJECT[INDEX++];
+    } else {
+      INDEX = LOOP_OBJECT.next();
+      if (INDEX.done) break;
+      ID = INDEX.value;
+    }
+  }
+`);
+const buildForOf = _core.template.statements(`
+  var ITERATOR_COMPLETION = true;
+  var ITERATOR_HAD_ERROR_KEY = false;
+  var ITERATOR_ERROR_KEY = undefined;
+  try {
+    for (
+      var ITERATOR_KEY = OBJECT[Symbol.iterator](), STEP_KEY;
+      !(ITERATOR_COMPLETION = (STEP_KEY = ITERATOR_KEY.next()).done);
+      ITERATOR_COMPLETION = true
+    ) {}
+  } catch (err) {
+    ITERATOR_HAD_ERROR_KEY = true;
+    ITERATOR_ERROR_KEY = err;
+  } finally {
+    try {
+      if (!ITERATOR_COMPLETION && ITERATOR_KEY.return != null) {
+        ITERATOR_KEY.return();
+      }
+    } finally {
+      if (ITERATOR_HAD_ERROR_KEY) {
+        throw ITERATOR_ERROR_KEY;
+      }
+    }
+  }
+`);
+function pushComputedPropsLoose(path, state) {
+  const {
+    node,
+    scope,
+    parent
+  } = path;
+  const {
+    left
+  } = node;
+  let declar, id, intermediate;
+  if (_core.types.isIdentifier(left) || _core.types.isPattern(left) || _core.types.isMemberExpression(left)) {
+    id = left;
+    intermediate = null;
+  } else if (_core.types.isVariableDeclaration(left)) {
+    id = scope.generateUidIdentifier("ref");
+    declar = _core.types.variableDeclaration(left.kind, [_core.types.variableDeclarator(left.declarations[0].id, _core.types.identifier(id.name))]);
+    intermediate = _core.types.variableDeclaration("var", [_core.types.variableDeclarator(_core.types.identifier(id.name))]);
+  } else {
+    throw state.buildCodeFrameError(left, `Unknown node type ${left.type} in ForStatement`);
+  }
+  const iteratorKey = scope.generateUidIdentifier("iterator");
+  const isArrayKey = scope.generateUidIdentifier("isArray");
+  const loop = buildForOfLoose({
+    LOOP_OBJECT: iteratorKey,
+    IS_ARRAY: isArrayKey,
+    OBJECT: node.right,
+    INDEX: scope.generateUidIdentifier("i"),
+    ID: id,
+    INTERMEDIATE: intermediate
+  });
+  const isLabeledParent = _core.types.isLabeledStatement(parent);
+  let labeled;
+  if (isLabeledParent) {
+    labeled = _core.types.labeledStatement(parent.label, loop);
+  }
+  return {
+    replaceParent: isLabeledParent,
+    declar: declar,
+    node: labeled || loop,
+    loop: loop
+  };
+}
+function pushComputedPropsSpec(path, state) {
+  const {
+    node,
+    scope,
+    parent
+  } = path;
+  const left = node.left;
+  let declar;
+  const stepKey = scope.generateUid("step");
+  const stepValue = _core.types.memberExpression(_core.types.identifier(stepKey), _core.types.identifier("value"));
+  if (_core.types.isIdentifier(left) || _core.types.isPattern(left) || _core.types.isMemberExpression(left)) {
+    declar = _core.types.expressionStatement(_core.types.assignmentExpression("=", left, stepValue));
+  } else if (_core.types.isVariableDeclaration(left)) {
+    declar = _core.types.variableDeclaration(left.kind, [_core.types.variableDeclarator(left.declarations[0].id, stepValue)]);
+  } else {
+    throw state.buildCodeFrameError(left, `Unknown node type ${left.type} in ForStatement`);
+  }
+  const template = buildForOf({
+    ITERATOR_HAD_ERROR_KEY: scope.generateUidIdentifier("didIteratorError"),
+    ITERATOR_COMPLETION: scope.generateUidIdentifier("iteratorNormalCompletion"),
+    ITERATOR_ERROR_KEY: scope.generateUidIdentifier("iteratorError"),
+    ITERATOR_KEY: scope.generateUidIdentifier("iterator"),
+    STEP_KEY: _core.types.identifier(stepKey),
+    OBJECT: node.right
+  });
+  const isLabeledParent = _core.types.isLabeledStatement(parent);
+  const tryBody = template[3].block.body;
+  const loop = tryBody[0];
+  if (isLabeledParent) {
+    tryBody[0] = _core.types.labeledStatement(parent.label, loop);
+  }
+  return {
+    replaceParent: isLabeledParent,
+    declar: declar,
+    loop: loop,
+    node: template
+  };
+}
+
+//# sourceMappingURL=no-helper-implementation.js.map