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-rw-r--r--node_modules/regenerator-transform/src/visit.js369
1 files changed, 0 insertions, 369 deletions
diff --git a/node_modules/regenerator-transform/src/visit.js b/node_modules/regenerator-transform/src/visit.js
deleted file mode 100644
index a2744b38..00000000
--- a/node_modules/regenerator-transform/src/visit.js
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@@ -1,369 +0,0 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-"use strict";
-
-import assert from "assert";
-import { hoist } from "./hoist";
-import { Emitter } from "./emit";
-import replaceShorthandObjectMethod from "./replaceShorthandObjectMethod";
-import * as util from "./util";
-
-exports.getVisitor = ({ types: t }) => ({
- Method(path, state) {
- let node = path.node;
-
- if (!shouldRegenerate(node, state)) return;
-
- const container = t.functionExpression(
- null,
- [],
- t.cloneNode(node.body, false),
- node.generator,
- node.async,
- );
-
- path.get("body").set("body", [
- t.returnStatement(
- t.callExpression(container, []),
- ),
- ]);
-
- // Regardless of whether or not the wrapped function is a an async method
- // or generator the outer function should not be
- node.async = false;
- node.generator = false;
-
- // Unwrap the wrapper IIFE's environment so super and this and such still work.
- path
- .get("body.body.0.argument.callee")
- .unwrapFunctionEnvironment();
- },
- Function: {
- exit: util.wrapWithTypes(t, function(path, state) {
- let node = path.node;
-
- if (!shouldRegenerate(node, state)) return;
-
- // if this is an ObjectMethod, we need to convert it to an ObjectProperty
- path = replaceShorthandObjectMethod(path);
- node = path.node;
-
- let contextId = path.scope.generateUidIdentifier("context");
- let argsId = path.scope.generateUidIdentifier("args");
-
- path.ensureBlock();
- let bodyBlockPath = path.get("body");
-
- if (node.async) {
- bodyBlockPath.traverse(awaitVisitor);
- }
-
- bodyBlockPath.traverse(functionSentVisitor, {
- context: contextId
- });
-
- let outerBody = [];
- let innerBody = [];
-
- bodyBlockPath.get("body").forEach(function(childPath) {
- let node = childPath.node;
- if (t.isExpressionStatement(node) &&
- t.isStringLiteral(node.expression)) {
- // Babylon represents directives like "use strict" as elements
- // of a bodyBlockPath.node.directives array, but they could just
- // as easily be represented (by other parsers) as traditional
- // string-literal-valued expression statements, so we need to
- // handle that here. (#248)
- outerBody.push(node);
- } else if (node && node._blockHoist != null) {
- outerBody.push(node);
- } else {
- innerBody.push(node);
- }
- });
-
- if (outerBody.length > 0) {
- // Only replace the inner body if we actually hoisted any statements
- // to the outer body.
- bodyBlockPath.node.body = innerBody;
- }
-
- let outerFnExpr = getOuterFnExpr(path);
- // Note that getOuterFnExpr has the side-effect of ensuring that the
- // function has a name (so node.id will always be an Identifier), even
- // if a temporary name has to be synthesized.
- t.assertIdentifier(node.id);
- let innerFnId = t.identifier(node.id.name + "$");
-
- // Turn all declarations into vars, and replace the original
- // declarations with equivalent assignment expressions.
- let vars = hoist(path);
-
- let context = {
- usesThis: false,
- usesArguments: false,
- getArgsId: () => t.clone(argsId),
- };
- path.traverse(argumentsThisVisitor, context);
-
- if (context.usesArguments) {
- vars = vars || t.variableDeclaration("var", []);
- vars.declarations.push(t.variableDeclarator(
- t.clone(argsId),
- t.identifier("arguments"),
- ));
- }
-
- let emitter = new Emitter(contextId);
- emitter.explode(path.get("body"));
-
- if (vars && vars.declarations.length > 0) {
- outerBody.push(vars);
- }
-
- let wrapArgs = [emitter.getContextFunction(innerFnId)];
- let tryLocsList = emitter.getTryLocsList();
-
- if (node.generator) {
- wrapArgs.push(outerFnExpr);
- } else if (context.usesThis || tryLocsList || node.async) {
- // Async functions that are not generators don't care about the
- // outer function because they don't need it to be marked and don't
- // inherit from its .prototype.
- wrapArgs.push(t.nullLiteral());
- }
- if (context.usesThis) {
- wrapArgs.push(t.thisExpression());
- } else if (tryLocsList || node.async) {
- wrapArgs.push(t.nullLiteral());
- }
- if (tryLocsList) {
- wrapArgs.push(tryLocsList);
- } else if (node.async) {
- wrapArgs.push(t.nullLiteral());
- }
-
- if (node.async) {
- // Rename any locally declared "Promise" variable,
- // to use the global one.
- let currentScope = path.scope;
- do {
- if (currentScope.hasOwnBinding("Promise")) currentScope.rename("Promise");
- } while (currentScope = currentScope.parent);
-
- wrapArgs.push(t.identifier("Promise"));
- }
-
- let wrapCall = t.callExpression(
- util.runtimeProperty(node.async ? "async" : "wrap"),
- wrapArgs
- );
-
- outerBody.push(t.returnStatement(wrapCall));
- node.body = t.blockStatement(outerBody);
- // We injected a few new variable declarations (for every hoisted var),
- // so we need to add them to the scope.
- path.get("body.body").forEach(p => p.scope.registerDeclaration(p));
-
- const oldDirectives = bodyBlockPath.node.directives;
- if (oldDirectives) {
- // Babylon represents directives like "use strict" as elements of
- // a bodyBlockPath.node.directives array. (#248)
- node.body.directives = oldDirectives;
- }
-
- let wasGeneratorFunction = node.generator;
- if (wasGeneratorFunction) {
- node.generator = false;
- }
-
- if (node.async) {
- node.async = false;
- }
-
- if (wasGeneratorFunction && t.isExpression(node)) {
- util.replaceWithOrRemove(path, t.callExpression(util.runtimeProperty("mark"), [node]))
- path.addComment("leading", "#__PURE__");
- }
-
- const insertedLocs = emitter.getInsertedLocs();
-
- path.traverse({
- NumericLiteral(path) {
- if (!insertedLocs.has(path.node)) {
- return;
- }
-
- path.replaceWith(t.numericLiteral(path.node.value));
- },
- })
-
- // Generators are processed in 'exit' handlers so that regenerator only has to run on
- // an ES5 AST, but that means traversal will not pick up newly inserted references
- // to things like 'regeneratorRuntime'. To avoid this, we explicitly requeue.
- path.requeue();
- })
- }
-});
-
-// Check if a node should be transformed by regenerator
-function shouldRegenerate(node, state) {
- if (node.generator) {
- if (node.async) {
- // Async generator
- return state.opts.asyncGenerators !== false;
- } else {
- // Plain generator
- return state.opts.generators !== false;
- }
- } else if (node.async) {
- // Async function
- return state.opts.async !== false;
- } else {
- // Not a generator or async function.
- return false;
- }
-}
-
-// Given a NodePath for a Function, return an Expression node that can be
-// used to refer reliably to the function object from inside the function.
-// This expression is essentially a replacement for arguments.callee, with
-// the key advantage that it works in strict mode.
-function getOuterFnExpr(funPath) {
- const t = util.getTypes();
- let node = funPath.node;
- t.assertFunction(node);
-
- if (!node.id) {
- // Default-exported function declarations, and function expressions may not
- // have a name to reference, so we explicitly add one.
- node.id = funPath.scope.parent.generateUidIdentifier("callee");
- }
-
- if (node.generator && // Non-generator functions don't need to be marked.
- t.isFunctionDeclaration(node)) {
- // Return the identifier returned by runtime.mark(<node.id>).
- return getMarkedFunctionId(funPath);
- }
-
- return t.clone(node.id);
-}
-
-const markInfo = new WeakMap();
-
-function getMarkInfo(node) {
- if (!markInfo.has(node)) {
- markInfo.set(node, {});
- }
- return markInfo.get(node);
-}
-
-function getMarkedFunctionId(funPath) {
- const t = util.getTypes();
- const node = funPath.node;
- t.assertIdentifier(node.id);
-
- const blockPath = funPath.findParent(function (path) {
- return path.isProgram() || path.isBlockStatement();
- });
-
- if (!blockPath) {
- return node.id;
- }
-
- const block = blockPath.node;
- assert.ok(Array.isArray(block.body));
-
- const info = getMarkInfo(block);
- if (!info.decl) {
- info.decl = t.variableDeclaration("var", []);
- blockPath.unshiftContainer("body", info.decl);
- info.declPath = blockPath.get("body.0");
- }
-
- assert.strictEqual(info.declPath.node, info.decl);
-
- // Get a new unique identifier for our marked variable.
- const markedId = blockPath.scope.generateUidIdentifier("marked");
- const markCallExp = t.callExpression(
- util.runtimeProperty("mark"),
- [t.clone(node.id)]
- );
-
- const index = info.decl.declarations.push(
- t.variableDeclarator(markedId, markCallExp)
- ) - 1;
-
- const markCallExpPath =
- info.declPath.get("declarations." + index + ".init");
-
- assert.strictEqual(markCallExpPath.node, markCallExp);
-
- markCallExpPath.addComment("leading", "#__PURE__");
-
- return t.clone(markedId);
-}
-
-let argumentsThisVisitor = {
- "FunctionExpression|FunctionDeclaration|Method": function(path) {
- path.skip();
- },
-
- Identifier: function(path, state) {
- if (path.node.name === "arguments" && util.isReference(path)) {
- util.replaceWithOrRemove(path, state.getArgsId());
- state.usesArguments = true;
- }
- },
-
- ThisExpression: function(path, state) {
- state.usesThis = true;
- }
-};
-
-let functionSentVisitor = {
- MetaProperty(path) {
- let { node } = path;
-
- if (node.meta.name === "function" &&
- node.property.name === "sent") {
- const t = util.getTypes();
- util.replaceWithOrRemove(
- path,
- t.memberExpression(
- t.clone(this.context),
- t.identifier("_sent")
- )
- );
- }
- }
-};
-
-let awaitVisitor = {
- Function: function(path) {
- path.skip(); // Don't descend into nested function scopes.
- },
-
- AwaitExpression: function(path) {
- const t = util.getTypes();
-
- // Convert await expressions to yield expressions.
- let argument = path.node.argument;
-
- // Transforming `await x` to `yield regeneratorRuntime.awrap(x)`
- // causes the argument to be wrapped in such a way that the runtime
- // can distinguish between awaited and merely yielded values.
- util.replaceWithOrRemove(path, t.yieldExpression(
- t.callExpression(
- util.runtimeProperty("awrap"),
- [argument]
- ),
- false
- ));
- }
-};