node: updatemain

1 files changed, 0 insertions, 1179 deletions

diff --git a/node_modules/babel-plugin-minify-simplify/lib/index.js b/node_modules/babel-plugin-minify-simplify/lib/index.js
deleted file mode 100644
index 98b6190d..00000000
--- a/node_modules/babel-plugin-minify-simplify/lib/index.js
+++ /dev/null
@@ -1,1179 +0,0 @@
-"use strict";
-
-function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }
-
-function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance"); }
-
-function _iterableToArrayLimit(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
-
-function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
-
-module.exports = ({
-  types: t
-}) => {
-  const flipExpressions = require("babel-helper-flip-expressions")(t);
-
-  const toMultipleSequenceExpressions = require("babel-helper-to-multiple-sequence-expressions")(t);
-
-  const ifStatement = require("./if-statement")(t);
-
-  const conditionalExpression = require("./conditional-expression")(t);
-
-  const logicalExpression = require("./logical-expression")(t);
-
-  const assignmentExpression = require("./assignment-expression")(t);
-
-  const VOID_0 = t.unaryExpression("void", t.numericLiteral(0), true);
-  const condExprSeen = Symbol("condExprSeen");
-  const seqExprSeen = Symbol("seqExprSeen");
-  const shouldRevisit = Symbol("shouldRevisit");
-  return {
-    name: "minify-simplify",
-    visitor: {
-      Statement: {
-        exit(path) {
-          if (path.node[shouldRevisit]) {
-            delete path.node[shouldRevisit];
-            path.visit();
-          }
-        }
-
-      },
-      // CallExpression(path) {
-      // const { node } = path;
-
-      /* (function() {})() -> !function() {}()
-        There is a bug in babel in printing this. Disabling for now.
-        if (t.isFunctionExpression(node.callee) &&
-            (t.isExpressionStatement(parent) ||
-             (t.isSequenceExpression(parent) && parent.expressions[0] === node))
-        ) {
-          path.replaceWith(
-            t.callExpression(
-              t.unaryExpression("!", node.callee, true),
-              node.arguments
-            )
-          );
-          return;
-        }*/
-      // },
-      UnaryExpression: {
-        enter: [// Demorgans.
-        function (path) {
-          const node = path.node;
-
-          if (node.operator !== "!" || flipExpressions.hasSeen(node)) {
-            return;
-          }
-
-          const expr = node.argument; // We need to make sure that the return type will always be boolean.
-
-          if (!(t.isLogicalExpression(expr) || t.isConditionalExpression(expr) || t.isBinaryExpression(expr))) {
-            return;
-          }
-
-          if (t.isBinaryExpression(expr) && t.COMPARISON_BINARY_OPERATORS.indexOf(expr.operator) === -1) {
-            return;
-          }
-
-          if (flipExpressions.shouldFlip(expr, 1)) {
-            const newNode = flipExpressions.flip(expr);
-            path.replaceWith(newNode);
-          }
-        }, // !(a, b, c) -> a, b, !c
-        function (path) {
-          const node = path.node;
-
-          if (node.operator !== "!") {
-            return;
-          }
-
-          if (!t.isSequenceExpression(node.argument)) {
-            return;
-          }
-
-          const seq = node.argument.expressions;
-          const expr = seq[seq.length - 1];
-          seq[seq.length - 1] = t.unaryExpression("!", expr, true);
-          path.replaceWith(node.argument);
-        }, // !(a ? b : c) -> a ? !b : !c
-        function (path) {
-          const node = path.node;
-
-          if (node.operator !== "!") {
-            return;
-          }
-
-          if (!t.isConditional(node.argument)) {
-            return;
-          }
-
-          const cond = node.argument;
-          cond.alternate = t.unaryExpression("!", cond.alternate, true);
-          cond.consequent = t.unaryExpression("!", cond.consequent, true);
-          path.replaceWith(node.argument);
-        }]
-      },
-
-      BinaryExpression(path) {
-        if (["!=", "=="].indexOf(path.node.operator) !== -1) {
-          undefinedToNull(path.get("left"));
-          undefinedToNull(path.get("right"));
-        }
-      },
-
-      LogicalExpression: {
-        exit: logicalExpression.simplifyPatterns
-      },
-      AssignmentExpression: assignmentExpression.simplify,
-      ConditionalExpression: {
-        enter: [// !foo ? 'foo' : 'bar' -> foo ? 'bar' : 'foo'
-        // foo !== 'lol' ? 'foo' : 'bar' -> foo === 'lol' ? 'bar' : 'foo'
-        function flipIfOrConditional(path) {
-          const node = path.node;
-
-          if (!path.get("test").isLogicalExpression()) {
-            flipNegation(node);
-            return;
-          }
-
-          if (flipExpressions.shouldFlip(node.test)) {
-            node.test = flipExpressions.flip(node.test);
-            var _ref = [node.consequent, node.alternate];
-            node.alternate = _ref[0];
-            node.consequent = _ref[1];
-          }
-        }, conditionalExpression.simplifyPatterns],
-        exit: [// a ? x = foo : b ? x = bar : x = baz;
-        // x = a ? foo : b ? bar : baz;
-        function (topPath) {
-          if (!topPath.parentPath.isExpressionStatement() && !topPath.parentPath.isSequenceExpression()) {
-            return;
-          }
-
-          const mutations = [];
-          let firstLeft = null;
-          let operator = null;
-
-          function visit(path) {
-            if (path.isConditionalExpression()) {
-              let bail = visit(path.get("consequent"));
-
-              if (bail) {
-                return true;
-              }
-
-              bail = visit(path.get("alternate"));
-              return bail;
-            }
-
-            if (operator == null) {
-              operator = path.node.operator;
-            } else if (path.node.operator !== operator) {
-              return true;
-            }
-
-            if (!path.isAssignmentExpression() || !(path.get("left").isIdentifier() || path.get("left").isMemberExpression())) {
-              return true;
-            }
-
-            const left = path.get("left").node;
-
-            if (firstLeft == null) {
-              firstLeft = left;
-            } else if (!t.isNodesEquivalent(left, firstLeft)) {
-              return true;
-            }
-
-            mutations.push(() => path.replaceWith(path.get("right").node));
-          }
-
-          const bail = visit(topPath);
-
-          if (bail) {
-            return;
-          }
-
-          mutations.forEach(f => f());
-          topPath.replaceWith(t.assignmentExpression(operator, firstLeft, topPath.node));
-        }, // bar ? void 0 : void 0
-        // (bar, void 0)
-        // TODO: turn this into general equiv check
-        function (path) {
-          const node = path.node;
-
-          if (isVoid0(node.consequent) && isVoid0(node.alternate)) {
-            path.replaceWith(t.sequenceExpression([path.node.test, VOID_0]));
-          }
-        }, // bar ? void 0 : foo ? void 0 : <etc>
-        // bar || foo : void 0
-        // TODO: turn this into general equiv check
-        function (path) {
-          const node = path.node;
-
-          if (node[condExprSeen] || !isVoid0(node.consequent)) {
-            return;
-          }
-
-          node[condExprSeen] = true;
-          const tests = [node.test];
-          const mutations = [];
-          let alt;
-
-          for (let next = path.get("alternate"); next.isConditionalExpression(); next = next.get("alternate")) {
-            next.node[condExprSeen] = true;
-            alt = next.node.alternate;
-
-            if (isVoid0(next.node.consequent)) {
-              tests.push(next.node.test);
-              mutations.push(() => next.remove());
-            } else {
-              alt = next.node;
-              break;
-            }
-          }
-
-          if (tests.length === 1) {
-            return;
-          }
-
-          const test = tests.reduce((expr, curTest) => t.logicalExpression("||", expr, curTest));
-          path.replaceWith(t.conditionalExpression(test, VOID_0, alt));
-        }]
-      },
-      // concat
-      VariableDeclaration: {
-        enter: [// Put vars with no init at the top.
-        function (path) {
-          const node = path.node;
-
-          if (node.declarations.length < 2) {
-            return;
-          }
-
-          const inits = [];
-          const empty = [];
-          var _iteratorNormalCompletion = true;
-          var _didIteratorError = false;
-          var _iteratorError = undefined;
-
-          try {
-            for (var _iterator = node.declarations[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
-              const decl = _step.value;
-
-              if (!decl.init) {
-                empty.push(decl);
-              } else {
-                inits.push(decl);
-              }
-            } // This is based on exprimintation but there is a significant
-            // imrpovement when we place empty vars at the top in smaller
-            // files. Whereas it hurts in larger files.
-
-          } catch (err) {
-            _didIteratorError = true;
-            _iteratorError = err;
-          } finally {
-            try {
-              if (!_iteratorNormalCompletion && _iterator.return != null) {
-                _iterator.return();
-              }
-            } finally {
-              if (_didIteratorError) {
-                throw _iteratorError;
-              }
-            }
-          }
-
-          if (this.fitsInSlidingWindow) {
-            node.declarations = empty.concat(inits);
-          } else {
-            node.declarations = inits.concat(empty);
-          }
-        }]
-      },
-      Function: {
-        exit(path) {
-          earlyReturnTransform(path);
-
-          if (!path.node[shouldRevisit]) {
-            return;
-          }
-
-          delete path.node[shouldRevisit];
-          path.visit();
-        }
-
-      },
-      For: {
-        enter: earlyContinueTransform,
-        exit: earlyContinueTransform
-      },
-      ForStatement: {
-        // Merge previous expressions in the init part of the for.
-        enter(path) {
-          const node = path.node;
-
-          if (!path.inList || node.init && !t.isExpression(node.init)) {
-            return;
-          }
-
-          const prev = path.getSibling(path.key - 1);
-          let consumed = false;
-
-          if (prev.isVariableDeclaration()) {
-            let referencedOutsideLoop = false; // we don't care if vars are referenced outside the loop as they are fn scope
-
-            if (prev.node.kind === "let" || prev.node.kind === "const") {
-              const ids = Object.keys(prev.getBindingIdentifiers());
-
-              idloop: for (let i = 0; i < ids.length; i++) {
-                const binding = prev.scope.bindings[ids[i]]; // TODO
-                // Temporary Fix
-                // if there is no binding, we assume it is referenced outside
-                // and deopt to avoid bugs
-
-                if (!binding) {
-                  referencedOutsideLoop = true;
-                  break idloop;
-                }
-
-                const refs = binding.referencePaths;
-
-                for (let j = 0; j < refs.length; j++) {
-                  if (!isAncestor(path, refs[j])) {
-                    referencedOutsideLoop = true;
-                    break idloop;
-                  }
-                }
-              }
-            }
-
-            if (!node.init && !referencedOutsideLoop) {
-              node.init = prev.node;
-              consumed = true;
-            }
-          } else if (prev.isExpressionStatement()) {
-            const expr = prev.node.expression;
-
-            if (node.init) {
-              if (t.isSequenceExpression(expr)) {
-                expr.expressions.push(node.init);
-                node.init = expr;
-              } else {
-                node.init = t.sequenceExpression([expr, node.init]);
-              }
-            } else {
-              node.init = expr;
-            }
-
-            consumed = true;
-          }
-
-          if (consumed) {
-            prev.remove();
-          }
-        },
-
-        exit(path) {
-          const node = path.node;
-
-          if (!node.test) {
-            return;
-          }
-
-          if (!path.get("body").isBlockStatement()) {
-            const bodyNode = path.get("body").node;
-
-            if (!t.isIfStatement(bodyNode)) {
-              return;
-            }
-
-            if (t.isBreakStatement(bodyNode.consequent, {
-              label: null
-            })) {
-              node.test = t.logicalExpression("&&", node.test, t.unaryExpression("!", bodyNode.test, true));
-              node.body = bodyNode.alternate || t.emptyStatement();
-              return;
-            }
-
-            if (t.isBreakStatement(bodyNode.alternate, {
-              label: null
-            })) {
-              node.test = t.logicalExpression("&&", node.test, bodyNode.test);
-              node.body = bodyNode.consequent || t.emptyStatement();
-              return;
-            }
-
-            return;
-          }
-
-          const statements = node.body.body;
-          const exprs = [];
-          let ifStatement = null;
-          let breakAt = null;
-          let i = 0;
-
-          for (let statement; statement = statements[i]; i++) {
-            if (t.isIfStatement(statement)) {
-              if (t.isBreakStatement(statement.consequent, {
-                label: null
-              })) {
-                ifStatement = statement;
-                breakAt = "consequent";
-              } else if (t.isBreakStatement(statement.alternate, {
-                label: null
-              })) {
-                ifStatement = statement;
-                breakAt = "alternate";
-              }
-
-              break;
-            } // A statement appears before the break statement then bail.
-
-
-            if (!t.isExpressionStatement(statement)) {
-              return;
-            }
-
-            exprs.push(statement.expression);
-          }
-
-          if (!ifStatement) {
-            return;
-          }
-
-          const rest = [];
-
-          if (breakAt === "consequent") {
-            if (t.isBlockStatement(ifStatement.alternate)) {
-              rest.push(...ifStatement.alternate.body);
-            } else if (ifStatement.alternate) {
-              rest.push(ifStatement.alternate);
-            }
-          } else {
-            if (t.isBlockStatement(ifStatement.consequent)) {
-              rest.push(...ifStatement.consequent.body);
-            } else if (ifStatement.consequent) {
-              rest.push(ifStatement.consequent);
-            }
-          }
-
-          rest.push(...statements.slice(i + 1));
-          const test = breakAt === "consequent" ? t.unaryExpression("!", ifStatement.test, true) : ifStatement.test;
-          let expr;
-
-          if (exprs.length === 1) {
-            expr = t.sequenceExpression([exprs[0], test]);
-          } else if (exprs.length) {
-            exprs.push(test);
-            expr = t.sequenceExpression(exprs);
-          } else {
-            expr = test;
-          }
-
-          node.test = t.logicalExpression("&&", node.test, expr);
-
-          if (rest.length === 1) {
-            node.body = rest[0];
-          } else if (rest.length) {
-            node.body = t.blockStatement(rest);
-          } else {
-            node.body = t.emptyStatement();
-          }
-        }
-
-      },
-
-      Program(path) {
-        // An approximation of the resultant gzipped code after minification
-        this.fitsInSlidingWindow = path.getSource().length / 10 < 33000;
-        const node = path.node;
-        const statements = toMultipleSequenceExpressions(node.body);
-
-        if (!statements.length) {
-          return;
-        }
-
-        node.body = statements;
-      },
-
-      BlockStatement: {
-        enter(path) {
-          const node = path.node,
-                parent = path.parent;
-          const top = [];
-          const bottom = [];
-
-          for (let i = 0; i < node.body.length; i++) {
-            const bodyNode = node.body[i];
-
-            if (t.isFunctionDeclaration(bodyNode)) {
-              top.push(bodyNode);
-            } else {
-              bottom.push(bodyNode);
-            }
-          }
-
-          const statements = top.concat(toMultipleSequenceExpressions(bottom));
-
-          if (!statements.length) {
-            return;
-          }
-
-          if (statements.length > 1 || needsBlock(node, parent) || node.directives) {
-            node.body = statements;
-            return;
-          }
-
-          if (statements.length) {
-            path.replaceWith(statements[0]);
-            return;
-          }
-        },
-
-        exit(path) {
-          const node = path.node,
-                parent = path.parent;
-
-          if (t.isArrowFunctionExpression(parent) && node.body.length === 1 && t.isReturnStatement(node.body[0]) && node.body[0].argument !== null) {
-            path.replaceWith(node.body[0].argument);
-            return;
-          }
-
-          if (needsBlock(node, parent)) {
-            return;
-          }
-
-          if (node.body.length === 1) {
-            path.get("body")[0].inList = false;
-            path.replaceWith(node.body[0]);
-            return;
-          }
-
-          if (node.body.length === 0) {
-            path.replaceWith(t.emptyStatement());
-            return;
-          } // Check if oppurtinties to merge statements are available.
-
-
-          const statements = node.body;
-
-          if (!statements.length) {
-            return;
-          }
-
-          var _iteratorNormalCompletion2 = true;
-          var _didIteratorError2 = false;
-          var _iteratorError2 = undefined;
-
-          try {
-            for (var _iterator2 = statements[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {
-              const statement = _step2.value;
-
-              if (!t.isExpressionStatement(statement)) {
-                return;
-              }
-            }
-          } catch (err) {
-            _didIteratorError2 = true;
-            _iteratorError2 = err;
-          } finally {
-            try {
-              if (!_iteratorNormalCompletion2 && _iterator2.return != null) {
-                _iterator2.return();
-              }
-            } finally {
-              if (_didIteratorError2) {
-                throw _iteratorError2;
-              }
-            }
-          }
-
-          path.visit();
-        }
-
-      },
-      ThrowStatement: createPrevExpressionEater("throw"),
-      // Try to merge previous statements into a sequence
-      ReturnStatement: {
-        enter: [createPrevExpressionEater("return"), // Remove return if last statement with no argument.
-        // Replace return with `void` argument with argument.
-        function (path) {
-          const node = path.node;
-
-          if (!path.parentPath.parentPath.isFunction() || path.getSibling(path.key + 1).node) {
-            return;
-          }
-
-          if (!node.argument) {
-            path.remove();
-            return;
-          }
-
-          if (t.isUnaryExpression(node.argument, {
-            operator: "void"
-          })) {
-            path.replaceWith(node.argument.argument);
-          }
-        }]
-      },
-      // turn blocked ifs into single statements
-      IfStatement: {
-        exit: [ifStatement.mergeNestedIfs, ifStatement.simplify, ifStatement.switchConsequent, ifStatement.conditionalReturnToGuards, createPrevExpressionEater("if")]
-      },
-
-      WhileStatement(path) {
-        const node = path.node;
-        path.replaceWith(t.forStatement(null, node.test, null, node.body));
-      },
-
-      ForInStatement: createPrevExpressionEater("for-in"),
-      // Flatten sequence expressions.
-      SequenceExpression: {
-        exit(path) {
-          if (path.node[seqExprSeen]) {
-            return;
-          }
-
-          function flatten(node) {
-            node[seqExprSeen] = true;
-            const ret = [];
-            var _iteratorNormalCompletion3 = true;
-            var _didIteratorError3 = false;
-            var _iteratorError3 = undefined;
-
-            try {
-              for (var _iterator3 = node.expressions[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {
-                const n = _step3.value;
-
-                if (t.isSequenceExpression(n)) {
-                  ret.push(...flatten(n));
-                } else {
-                  ret.push(n);
-                }
-              }
-            } catch (err) {
-              _didIteratorError3 = true;
-              _iteratorError3 = err;
-            } finally {
-              try {
-                if (!_iteratorNormalCompletion3 && _iterator3.return != null) {
-                  _iterator3.return();
-                }
-              } finally {
-                if (_didIteratorError3) {
-                  throw _iteratorError3;
-                }
-              }
-            }
-
-            return ret;
-          }
-
-          path.node.expressions = flatten(path.node);
-        }
-
-      },
-
-      SwitchCase(path) {
-        const node = path.node;
-
-        if (!node.consequent.length) {
-          return;
-        }
-
-        node.consequent = toMultipleSequenceExpressions(node.consequent);
-      },
-
-      SwitchStatement: {
-        exit: [// Convert switch statements with all returns in their cases
-        // to return conditional.
-        function (path) {
-          const node = path.node; // Need to be careful of side-effects.
-
-          if (!t.isIdentifier(node.discriminant)) {
-            return;
-          }
-
-          if (!node.cases.length) {
-            return;
-          }
-
-          const consTestPairs = [];
-          let fallThru = [];
-          let defaultRet;
-          var _iteratorNormalCompletion4 = true;
-          var _didIteratorError4 = false;
-          var _iteratorError4 = undefined;
-
-          try {
-            for (var _iterator4 = node.cases[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {
-              const switchCase = _step4.value;
-
-              if (switchCase.consequent.length > 1) {
-                return;
-              }
-
-              const cons = switchCase.consequent[0]; // default case
-
-              if (!switchCase.test) {
-                if (!t.isReturnStatement(cons)) {
-                  return;
-                }
-
-                defaultRet = cons;
-                continue;
-              }
-
-              if (!switchCase.consequent.length) {
-                fallThru.push(switchCase.test);
-                continue;
-              } // TODO: can we void it?
-
-
-              if (!t.isReturnStatement(cons)) {
-                return;
-              }
-
-              let test = t.binaryExpression("===", node.discriminant, switchCase.test);
-
-              if (fallThru.length && !defaultRet) {
-                test = fallThru.reduceRight((right, test) => t.logicalExpression("||", t.binaryExpression("===", node.discriminant, test), right), test);
-              }
-
-              fallThru = [];
-              consTestPairs.push([test, cons.argument || VOID_0]);
-            } // Bail if we have any remaining fallthrough
-
-          } catch (err) {
-            _didIteratorError4 = true;
-            _iteratorError4 = err;
-          } finally {
-            try {
-              if (!_iteratorNormalCompletion4 && _iterator4.return != null) {
-                _iterator4.return();
-              }
-            } finally {
-              if (_didIteratorError4) {
-                throw _iteratorError4;
-              }
-            }
-          }
-
-          if (fallThru.length) {
-            return;
-          } // We need the default to be there to make sure there is an oppurtinity
-          // not to return.
-
-
-          if (!defaultRet) {
-            if (path.inList) {
-              const nextPath = path.getSibling(path.key + 1);
-
-              if (nextPath.isReturnStatement()) {
-                defaultRet = nextPath.node;
-                nextPath.remove();
-              } else if (!nextPath.node && path.parentPath.parentPath.isFunction()) {
-                // If this is the last statement in a function we just fake a void return.
-                defaultRet = t.returnStatement(VOID_0);
-              } else {
-                return;
-              }
-            } else {
-              return;
-            }
-          }
-
-          const cond = consTestPairs.reduceRight((alt, [test, cons]) => t.conditionalExpression(test, cons, alt), defaultRet.argument || VOID_0);
-          path.replaceWith(t.returnStatement(cond)); // Maybe now we can merge with some previous switch statement.
-
-          if (path.inList) {
-            const prev = path.getSibling(path.key - 1);
-
-            if (prev.isSwitchStatement()) {
-              prev.visit();
-            }
-          }
-        }, // Convert switches into conditionals.
-        function (path) {
-          const node = path.node; // Need to be careful of side-effects.
-
-          if (!t.isIdentifier(node.discriminant)) {
-            return;
-          }
-
-          if (!node.cases.length) {
-            return;
-          }
-
-          const exprTestPairs = [];
-          let fallThru = [];
-          let defaultExpr;
-          var _iteratorNormalCompletion5 = true;
-          var _didIteratorError5 = false;
-          var _iteratorError5 = undefined;
-
-          try {
-            for (var _iterator5 = node.cases[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {
-              const switchCase = _step5.value;
-
-              if (!switchCase.test) {
-                if (switchCase.consequent.length !== 1) {
-                  return;
-                }
-
-                if (!t.isExpressionStatement(switchCase.consequent[0])) {
-                  return;
-                }
-
-                defaultExpr = switchCase.consequent[0].expression;
-                continue;
-              }
-
-              if (!switchCase.consequent.length) {
-                fallThru.push(switchCase.test);
-                continue;
-              }
-
-              const _switchCase$consequen = _slicedToArray(switchCase.consequent, 2),
-                    cons = _switchCase$consequen[0],
-                    breakStatement = _switchCase$consequen[1];
-
-              if (switchCase === node.cases[node.cases.length - 1]) {
-                if (breakStatement && !t.isBreakStatement(breakStatement)) {
-                  return;
-                }
-              } else if (!t.isBreakStatement(breakStatement)) {
-                return;
-              }
-
-              if (!t.isExpressionStatement(cons) || switchCase.consequent.length > 2) {
-                return;
-              }
-
-              let test = t.binaryExpression("===", node.discriminant, switchCase.test);
-
-              if (fallThru.length && !defaultExpr) {
-                test = fallThru.reduceRight((right, test) => t.logicalExpression("||", t.binaryExpression("===", node.discriminant, test), right), test);
-              }
-
-              fallThru = [];
-              exprTestPairs.push([test, cons.expression]);
-            }
-          } catch (err) {
-            _didIteratorError5 = true;
-            _iteratorError5 = err;
-          } finally {
-            try {
-              if (!_iteratorNormalCompletion5 && _iterator5.return != null) {
-                _iterator5.return();
-              }
-            } finally {
-              if (_didIteratorError5) {
-                throw _iteratorError5;
-              }
-            }
-          }
-
-          if (fallThru.length) {
-            return;
-          }
-
-          const cond = exprTestPairs.reduceRight((alt, [test, cons]) => t.conditionalExpression(test, cons, alt), defaultExpr || VOID_0);
-          path.replaceWith(cond);
-        }, function (path) {
-          const node = path.node;
-
-          if (!node.cases.length) {
-            return;
-          }
-
-          const lastCase = path.get("cases")[node.cases.length - 1];
-
-          if (!lastCase.node.consequent.length) {
-            return;
-          }
-
-          const potentialBreak = lastCase.get("consequent")[lastCase.node.consequent.length - 1];
-
-          if (t.isBreakStatement(potentialBreak) && potentialBreak.node.label === null) {
-            potentialBreak.remove();
-          }
-        }, createPrevExpressionEater("switch")]
-      }
-    }
-  };
-
-  function flipNegation(node) {
-    if (!node.consequent || !node.alternate) {
-      return;
-    }
-
-    const test = node.test;
-    let flip = false;
-
-    if (t.isBinaryExpression(test)) {
-      if (test.operator === "!==") {
-        test.operator = "===";
-        flip = true;
-      }
-
-      if (test.operator === "!=") {
-        test.operator = "==";
-        flip = true;
-      }
-    }
-
-    if (t.isUnaryExpression(test, {
-      operator: "!"
-    })) {
-      node.test = test.argument;
-      flip = true;
-    }
-
-    if (flip) {
-      const consequent = node.consequent;
-      node.consequent = node.alternate;
-      node.alternate = consequent;
-    }
-  }
-
-  function needsBlock(node, parent) {
-    return t.isFunction(parent) && node === parent.body || t.isTryStatement(parent) || t.isCatchClause(parent) || t.isSwitchStatement(parent) || isSingleBlockScopeDeclaration(node) && (t.isIfStatement(parent) || t.isLoop(parent));
-  }
-
-  function isSingleBlockScopeDeclaration(block) {
-    return t.isBlockStatement(block) && block.body.length === 1 && (t.isVariableDeclaration(block.body[0], {
-      kind: "let"
-    }) || t.isVariableDeclaration(block.body[0], {
-      kind: "const"
-    }) || t.isFunctionDeclaration(block.body[0]));
-  }
-
-  function isVoid0(expr) {
-    return expr === VOID_0 || t.isUnaryExpression(expr, {
-      operator: "void"
-    }) && t.isNumericLiteral(expr.argument, {
-      value: 0
-    });
-  }
-
-  function earlyReturnTransform(path) {
-    const block = path.get("body");
-
-    if (!block.isBlockStatement()) {
-      return;
-    }
-
-    const body = block.get("body");
-
-    for (let i = body.length - 1; i >= 0; i--) {
-      const statement = body[i];
-
-      if (t.isIfStatement(statement.node) && !statement.node.alternate && t.isReturnStatement(statement.node.consequent) && !statement.node.consequent.argument) {
-        genericEarlyExitTransform(statement);
-      }
-    }
-  }
-
-  function earlyContinueTransform(path) {
-    const block = path.get("body");
-
-    if (!block.isBlockStatement()) {
-      return;
-    }
-
-    let body = block.get("body");
-
-    for (let i = body.length - 1; i >= 0; i--) {
-      const statement = body[i];
-
-      if (t.isIfStatement(statement.node) && !statement.node.alternate && t.isContinueStatement(statement.node.consequent) && !statement.node.consequent.label) {
-        genericEarlyExitTransform(statement);
-      }
-    } // because we might have folded or removed statements
-
-
-    body = block.get("body"); // We may have reduced the body to a single statement.
-
-    if (body.length === 1 && !needsBlock(block.node, path.node)) {
-      block.replaceWith(body[0].node);
-    }
-  }
-
-  function genericEarlyExitTransform(path) {
-    const node = path.node;
-    const statements = path.parentPath.get(path.listKey).slice(path.key + 1).filter(stmt => !stmt.isFunctionDeclaration()); // deopt for any block scoped bindings
-    // issue#399
-
-    const deopt = !statements.every(stmt => {
-      if (!(stmt.isVariableDeclaration({
-        kind: "let"
-      }) || stmt.isVariableDeclaration({
-        kind: "const"
-      }))) {
-        return true;
-      }
-
-      const ids = Object.keys(stmt.getBindingIdentifiers());
-
-      for (var _i2 = 0; _i2 < ids.length; _i2++) {
-        const id = ids[_i2];
-        const binding = path.scope.getBinding(id); // TODO
-        // Temporary Fix
-        // if there is no binding, we assume it is referenced outside
-        // and deopt to avoid bugs
-
-        if (!binding) {
-          return false;
-        }
-
-        const refs = [...binding.referencePaths, ...binding.constantViolations];
-
-        for (var _i3 = 0; _i3 < refs.length; _i3++) {
-          const ref = refs[_i3];
-          if (!ref.isIdentifier()) return false;
-          const fnParent = ref.getFunctionParent(); // TODO
-          // Usage of scopes and bindings in simplify plugin results in
-          // undefined bindings because scope changes are not updated in the
-          // scope tree. So, we deopt whenever we encounter one such issue
-          // and not perform the transformation
-
-          if (!fnParent) {
-            return false;
-          }
-
-          if (fnParent.scope !== path.scope) return false;
-        }
-      }
-
-      return true;
-    });
-
-    if (deopt) {
-      path.visit();
-      return false;
-    }
-
-    if (!statements.length) {
-      path.replaceWith(t.expressionStatement(node.test));
-      return;
-    }
-
-    const test = node.test;
-
-    if (t.isBinaryExpression(test) && test.operator === "!==") {
-      test.operator = "===";
-    } else if (t.isBinaryExpression(test) && test.operator === "!=") {
-      test.operator = "==";
-    } else if (t.isUnaryExpression(test, {
-      operator: "!"
-    })) {
-      node.test = test.argument;
-    } else {
-      node.test = t.unaryExpression("!", node.test, true);
-    }
-
-    path.get("consequent").replaceWith(t.blockStatement(statements.map(stmt => t.clone(stmt.node))));
-    let l = statements.length;
-
-    while (l-- > 0) {
-      if (!statements[l].isFunctionDeclaration()) {
-        path.getSibling(path.key + 1).remove();
-      }
-    } // this should take care of removing the block
-
-
-    path.visit();
-  }
-
-  function createPrevExpressionEater(keyword) {
-    let key;
-
-    switch (keyword) {
-      case "switch":
-        key = "discriminant";
-        break;
-
-      case "throw":
-      case "return":
-        key = "argument";
-        break;
-
-      case "if":
-        key = "test";
-        break;
-
-      case "for-in":
-        key = "right";
-        break;
-    }
-
-    return function (path) {
-      if (!path.inList) {
-        return;
-      }
-
-      const node = path.node;
-      const prev = path.getSibling(path.key - 1);
-
-      if (!prev.isExpressionStatement()) {
-        return;
-      }
-
-      let seq = prev.node.expression;
-
-      if (node[key]) {
-        if (t.isSequenceExpression(seq)) {
-          seq.expressions.push(node[key]);
-        } else {
-          seq = t.sequenceExpression([seq, node[key]]);
-        }
-      } else {
-        if (t.isSequenceExpression(seq)) {
-          const lastExpr = seq.expressions[seq.expressions.length - 1];
-          seq.expressions[seq.expressions.length - 1] = t.unaryExpression("void", lastExpr, true);
-        } else {
-          seq = t.unaryExpression("void", seq, true);
-        }
-      }
-
-      if (seq) {
-        node[key] = seq;
-        prev.remove(); // Since we were able to merge some stuff it's possible that this has opened
-        // oppurtinties for other transforms to happen.
-        // TODO: Look into changing the traversal order from bottom to up to avoid
-        // having to revisit things.
-
-        if (path.parentPath.parent) {
-          path.parentPath.parent[shouldRevisit] = true;
-        }
-      }
-    };
-  } // path1 -> path2
-  // is path1 an ancestor of path2
-
-
-  function isAncestor(path1, path2) {
-    return !!path2.findParent(parent => parent === path1);
-  }
-
-  function isPureVoid(path) {
-    return path.isUnaryExpression({
-      operator: "void"
-    }) && path.isPure();
-  }
-
-  function isGlobalUndefined(path) {
-    return path.isIdentifier({
-      name: "undefined"
-    }) && !path.scope.getBinding("undefined");
-  }
-
-  function undefinedToNull(path) {
-    if (isGlobalUndefined(path) || isPureVoid(path)) {
-      path.replaceWith(t.nullLiteral());
-    }
-  }
-};
\ No newline at end of file