610 lines
21 KiB
JavaScript
610 lines
21 KiB
JavaScript
"use strict";
|
|
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
exports.arrowFunctionToExpression = arrowFunctionToExpression;
|
|
exports.ensureBlock = ensureBlock;
|
|
exports.ensureFunctionName = ensureFunctionName;
|
|
exports.splitExportDeclaration = splitExportDeclaration;
|
|
exports.toComputedKey = toComputedKey;
|
|
exports.unwrapFunctionEnvironment = unwrapFunctionEnvironment;
|
|
var _t = require("@babel/types");
|
|
var _template = require("@babel/template");
|
|
var _visitors = require("../visitors.js");
|
|
var _context = require("./context.js");
|
|
const {
|
|
arrowFunctionExpression,
|
|
assignmentExpression,
|
|
binaryExpression,
|
|
blockStatement,
|
|
callExpression,
|
|
conditionalExpression,
|
|
expressionStatement,
|
|
identifier,
|
|
isIdentifier,
|
|
jsxIdentifier,
|
|
logicalExpression,
|
|
LOGICAL_OPERATORS,
|
|
memberExpression,
|
|
metaProperty,
|
|
numericLiteral,
|
|
objectExpression,
|
|
restElement,
|
|
returnStatement,
|
|
sequenceExpression,
|
|
spreadElement,
|
|
stringLiteral,
|
|
super: _super,
|
|
thisExpression,
|
|
toExpression,
|
|
unaryExpression,
|
|
toBindingIdentifierName,
|
|
isFunction,
|
|
isAssignmentPattern,
|
|
isRestElement,
|
|
getFunctionName,
|
|
cloneNode,
|
|
variableDeclaration,
|
|
variableDeclarator,
|
|
exportNamedDeclaration,
|
|
exportSpecifier,
|
|
inherits
|
|
} = _t;
|
|
function toComputedKey() {
|
|
let key;
|
|
if (this.isMemberExpression()) {
|
|
key = this.node.property;
|
|
} else if (this.isProperty() || this.isMethod()) {
|
|
key = this.node.key;
|
|
} else {
|
|
throw new ReferenceError("todo");
|
|
}
|
|
if (!this.node.computed) {
|
|
if (isIdentifier(key)) key = stringLiteral(key.name);
|
|
}
|
|
return key;
|
|
}
|
|
function ensureBlock() {
|
|
const body = this.get("body");
|
|
const bodyNode = body.node;
|
|
if (Array.isArray(body)) {
|
|
throw new Error("Can't convert array path to a block statement");
|
|
}
|
|
if (!bodyNode) {
|
|
throw new Error("Can't convert node without a body");
|
|
}
|
|
if (body.isBlockStatement()) {
|
|
return bodyNode;
|
|
}
|
|
const statements = [];
|
|
let stringPath = "body";
|
|
let key;
|
|
let listKey;
|
|
if (body.isStatement()) {
|
|
listKey = "body";
|
|
key = 0;
|
|
statements.push(body.node);
|
|
} else {
|
|
stringPath += ".body.0";
|
|
if (this.isFunction()) {
|
|
key = "argument";
|
|
statements.push(returnStatement(body.node));
|
|
} else {
|
|
key = "expression";
|
|
statements.push(expressionStatement(body.node));
|
|
}
|
|
}
|
|
this.node.body = blockStatement(statements);
|
|
const parentPath = this.get(stringPath);
|
|
_context.setup.call(body, parentPath, listKey ? parentPath.node[listKey] : parentPath.node, listKey, key);
|
|
return this.node;
|
|
}
|
|
{
|
|
exports.arrowFunctionToShadowed = function () {
|
|
if (!this.isArrowFunctionExpression()) return;
|
|
this.arrowFunctionToExpression();
|
|
};
|
|
}
|
|
function unwrapFunctionEnvironment() {
|
|
if (!this.isArrowFunctionExpression() && !this.isFunctionExpression() && !this.isFunctionDeclaration()) {
|
|
throw this.buildCodeFrameError("Can only unwrap the environment of a function.");
|
|
}
|
|
hoistFunctionEnvironment(this);
|
|
}
|
|
function setType(path, type) {
|
|
path.node.type = type;
|
|
}
|
|
function arrowFunctionToExpression({
|
|
allowInsertArrow = true,
|
|
allowInsertArrowWithRest = allowInsertArrow,
|
|
noNewArrows = !(_arguments$ => (_arguments$ = arguments[0]) == null ? void 0 : _arguments$.specCompliant)()
|
|
} = {}) {
|
|
if (!this.isArrowFunctionExpression()) {
|
|
throw this.buildCodeFrameError("Cannot convert non-arrow function to a function expression.");
|
|
}
|
|
let self = this;
|
|
if (!noNewArrows) {
|
|
var _self$ensureFunctionN;
|
|
self = (_self$ensureFunctionN = self.ensureFunctionName(false)) != null ? _self$ensureFunctionN : self;
|
|
}
|
|
const {
|
|
thisBinding,
|
|
fnPath: fn
|
|
} = hoistFunctionEnvironment(self, noNewArrows, allowInsertArrow, allowInsertArrowWithRest);
|
|
fn.ensureBlock();
|
|
setType(fn, "FunctionExpression");
|
|
if (!noNewArrows) {
|
|
const checkBinding = thisBinding ? null : fn.scope.generateUidIdentifier("arrowCheckId");
|
|
if (checkBinding) {
|
|
fn.parentPath.scope.push({
|
|
id: checkBinding,
|
|
init: objectExpression([])
|
|
});
|
|
}
|
|
fn.get("body").unshiftContainer("body", expressionStatement(callExpression(this.hub.addHelper("newArrowCheck"), [thisExpression(), checkBinding ? identifier(checkBinding.name) : identifier(thisBinding)])));
|
|
fn.replaceWith(callExpression(memberExpression(fn.node, identifier("bind")), [checkBinding ? identifier(checkBinding.name) : thisExpression()]));
|
|
return fn.get("callee.object");
|
|
}
|
|
return fn;
|
|
}
|
|
const getSuperCallsVisitor = (0, _visitors.environmentVisitor)({
|
|
CallExpression(child, {
|
|
allSuperCalls
|
|
}) {
|
|
if (!child.get("callee").isSuper()) return;
|
|
allSuperCalls.push(child);
|
|
}
|
|
});
|
|
function hoistFunctionEnvironment(fnPath, noNewArrows = true, allowInsertArrow = true, allowInsertArrowWithRest = true) {
|
|
let arrowParent;
|
|
let thisEnvFn = fnPath.findParent(p => {
|
|
if (p.isArrowFunctionExpression()) {
|
|
var _arrowParent;
|
|
(_arrowParent = arrowParent) != null ? _arrowParent : arrowParent = p;
|
|
return false;
|
|
}
|
|
return p.isFunction() || p.isProgram() || p.isClassProperty({
|
|
static: false
|
|
}) || p.isClassPrivateProperty({
|
|
static: false
|
|
});
|
|
});
|
|
const inConstructor = thisEnvFn.isClassMethod({
|
|
kind: "constructor"
|
|
});
|
|
if (thisEnvFn.isClassProperty() || thisEnvFn.isClassPrivateProperty()) {
|
|
if (arrowParent) {
|
|
thisEnvFn = arrowParent;
|
|
} else if (allowInsertArrow) {
|
|
fnPath.replaceWith(callExpression(arrowFunctionExpression([], toExpression(fnPath.node)), []));
|
|
thisEnvFn = fnPath.get("callee");
|
|
fnPath = thisEnvFn.get("body");
|
|
} else {
|
|
throw fnPath.buildCodeFrameError("Unable to transform arrow inside class property");
|
|
}
|
|
}
|
|
const {
|
|
thisPaths,
|
|
argumentsPaths,
|
|
newTargetPaths,
|
|
superProps,
|
|
superCalls
|
|
} = getScopeInformation(fnPath);
|
|
if (inConstructor && superCalls.length > 0) {
|
|
if (!allowInsertArrow) {
|
|
throw superCalls[0].buildCodeFrameError("When using '@babel/plugin-transform-arrow-functions', " + "it's not possible to compile `super()` in an arrow function without compiling classes.\n" + "Please add '@babel/plugin-transform-classes' to your Babel configuration.");
|
|
}
|
|
if (!allowInsertArrowWithRest) {
|
|
throw superCalls[0].buildCodeFrameError("When using '@babel/plugin-transform-parameters', " + "it's not possible to compile `super()` in an arrow function with default or rest parameters without compiling classes.\n" + "Please add '@babel/plugin-transform-classes' to your Babel configuration.");
|
|
}
|
|
const allSuperCalls = [];
|
|
thisEnvFn.traverse(getSuperCallsVisitor, {
|
|
allSuperCalls
|
|
});
|
|
const superBinding = getSuperBinding(thisEnvFn);
|
|
allSuperCalls.forEach(superCall => {
|
|
const callee = identifier(superBinding);
|
|
callee.loc = superCall.node.callee.loc;
|
|
superCall.get("callee").replaceWith(callee);
|
|
});
|
|
}
|
|
if (argumentsPaths.length > 0) {
|
|
const argumentsBinding = getBinding(thisEnvFn, "arguments", () => {
|
|
const args = () => identifier("arguments");
|
|
if (thisEnvFn.scope.path.isProgram()) {
|
|
return conditionalExpression(binaryExpression("===", unaryExpression("typeof", args()), stringLiteral("undefined")), thisEnvFn.scope.buildUndefinedNode(), args());
|
|
} else {
|
|
return args();
|
|
}
|
|
});
|
|
argumentsPaths.forEach(argumentsChild => {
|
|
const argsRef = identifier(argumentsBinding);
|
|
argsRef.loc = argumentsChild.node.loc;
|
|
argumentsChild.replaceWith(argsRef);
|
|
});
|
|
}
|
|
if (newTargetPaths.length > 0) {
|
|
const newTargetBinding = getBinding(thisEnvFn, "newtarget", () => metaProperty(identifier("new"), identifier("target")));
|
|
newTargetPaths.forEach(targetChild => {
|
|
const targetRef = identifier(newTargetBinding);
|
|
targetRef.loc = targetChild.node.loc;
|
|
targetChild.replaceWith(targetRef);
|
|
});
|
|
}
|
|
if (superProps.length > 0) {
|
|
if (!allowInsertArrow) {
|
|
throw superProps[0].buildCodeFrameError("When using '@babel/plugin-transform-arrow-functions', " + "it's not possible to compile `super.prop` in an arrow function without compiling classes.\n" + "Please add '@babel/plugin-transform-classes' to your Babel configuration.");
|
|
}
|
|
const flatSuperProps = superProps.reduce((acc, superProp) => acc.concat(standardizeSuperProperty(superProp)), []);
|
|
flatSuperProps.forEach(superProp => {
|
|
const key = superProp.node.computed ? "" : superProp.get("property").node.name;
|
|
const superParentPath = superProp.parentPath;
|
|
const isAssignment = superParentPath.isAssignmentExpression({
|
|
left: superProp.node
|
|
});
|
|
const isCall = superParentPath.isCallExpression({
|
|
callee: superProp.node
|
|
});
|
|
const isTaggedTemplate = superParentPath.isTaggedTemplateExpression({
|
|
tag: superProp.node
|
|
});
|
|
const superBinding = getSuperPropBinding(thisEnvFn, isAssignment, key);
|
|
const args = [];
|
|
if (superProp.node.computed) {
|
|
args.push(superProp.get("property").node);
|
|
}
|
|
if (isAssignment) {
|
|
const value = superParentPath.node.right;
|
|
args.push(value);
|
|
}
|
|
const call = callExpression(identifier(superBinding), args);
|
|
if (isCall) {
|
|
superParentPath.unshiftContainer("arguments", thisExpression());
|
|
superProp.replaceWith(memberExpression(call, identifier("call")));
|
|
thisPaths.push(superParentPath.get("arguments.0"));
|
|
} else if (isAssignment) {
|
|
superParentPath.replaceWith(call);
|
|
} else if (isTaggedTemplate) {
|
|
superProp.replaceWith(callExpression(memberExpression(call, identifier("bind"), false), [thisExpression()]));
|
|
thisPaths.push(superProp.get("arguments.0"));
|
|
} else {
|
|
superProp.replaceWith(call);
|
|
}
|
|
});
|
|
}
|
|
let thisBinding;
|
|
if (thisPaths.length > 0 || !noNewArrows) {
|
|
thisBinding = getThisBinding(thisEnvFn, inConstructor);
|
|
if (noNewArrows || inConstructor && hasSuperClass(thisEnvFn)) {
|
|
thisPaths.forEach(thisChild => {
|
|
const thisRef = thisChild.isJSX() ? jsxIdentifier(thisBinding) : identifier(thisBinding);
|
|
thisRef.loc = thisChild.node.loc;
|
|
thisChild.replaceWith(thisRef);
|
|
});
|
|
if (!noNewArrows) thisBinding = null;
|
|
}
|
|
}
|
|
return {
|
|
thisBinding,
|
|
fnPath
|
|
};
|
|
}
|
|
function isLogicalOp(op) {
|
|
return LOGICAL_OPERATORS.includes(op);
|
|
}
|
|
function standardizeSuperProperty(superProp) {
|
|
if (superProp.parentPath.isAssignmentExpression() && superProp.parentPath.node.operator !== "=") {
|
|
const assignmentPath = superProp.parentPath;
|
|
const op = assignmentPath.node.operator.slice(0, -1);
|
|
const value = assignmentPath.node.right;
|
|
const isLogicalAssignment = isLogicalOp(op);
|
|
if (superProp.node.computed) {
|
|
const tmp = superProp.scope.generateDeclaredUidIdentifier("tmp");
|
|
const object = superProp.node.object;
|
|
const property = superProp.node.property;
|
|
assignmentPath.get("left").replaceWith(memberExpression(object, assignmentExpression("=", tmp, property), true));
|
|
assignmentPath.get("right").replaceWith(rightExpression(isLogicalAssignment ? "=" : op, memberExpression(object, identifier(tmp.name), true), value));
|
|
} else {
|
|
const object = superProp.node.object;
|
|
const property = superProp.node.property;
|
|
assignmentPath.get("left").replaceWith(memberExpression(object, property));
|
|
assignmentPath.get("right").replaceWith(rightExpression(isLogicalAssignment ? "=" : op, memberExpression(object, identifier(property.name)), value));
|
|
}
|
|
if (isLogicalAssignment) {
|
|
assignmentPath.replaceWith(logicalExpression(op, assignmentPath.node.left, assignmentPath.node.right));
|
|
} else {
|
|
assignmentPath.node.operator = "=";
|
|
}
|
|
return [assignmentPath.get("left"), assignmentPath.get("right").get("left")];
|
|
} else if (superProp.parentPath.isUpdateExpression()) {
|
|
const updateExpr = superProp.parentPath;
|
|
const tmp = superProp.scope.generateDeclaredUidIdentifier("tmp");
|
|
const computedKey = superProp.node.computed ? superProp.scope.generateDeclaredUidIdentifier("prop") : null;
|
|
const parts = [assignmentExpression("=", tmp, memberExpression(superProp.node.object, computedKey ? assignmentExpression("=", computedKey, superProp.node.property) : superProp.node.property, superProp.node.computed)), assignmentExpression("=", memberExpression(superProp.node.object, computedKey ? identifier(computedKey.name) : superProp.node.property, superProp.node.computed), binaryExpression(superProp.parentPath.node.operator[0], identifier(tmp.name), numericLiteral(1)))];
|
|
if (!superProp.parentPath.node.prefix) {
|
|
parts.push(identifier(tmp.name));
|
|
}
|
|
updateExpr.replaceWith(sequenceExpression(parts));
|
|
const left = updateExpr.get("expressions.0.right");
|
|
const right = updateExpr.get("expressions.1.left");
|
|
return [left, right];
|
|
}
|
|
return [superProp];
|
|
function rightExpression(op, left, right) {
|
|
if (op === "=") {
|
|
return assignmentExpression("=", left, right);
|
|
} else {
|
|
return binaryExpression(op, left, right);
|
|
}
|
|
}
|
|
}
|
|
function hasSuperClass(thisEnvFn) {
|
|
return thisEnvFn.isClassMethod() && !!thisEnvFn.parentPath.parentPath.node.superClass;
|
|
}
|
|
const assignSuperThisVisitor = (0, _visitors.environmentVisitor)({
|
|
CallExpression(child, {
|
|
supers,
|
|
thisBinding
|
|
}) {
|
|
if (!child.get("callee").isSuper()) return;
|
|
if (supers.has(child.node)) return;
|
|
supers.add(child.node);
|
|
child.replaceWithMultiple([child.node, assignmentExpression("=", identifier(thisBinding), identifier("this"))]);
|
|
}
|
|
});
|
|
function getThisBinding(thisEnvFn, inConstructor) {
|
|
return getBinding(thisEnvFn, "this", thisBinding => {
|
|
if (!inConstructor || !hasSuperClass(thisEnvFn)) return thisExpression();
|
|
thisEnvFn.traverse(assignSuperThisVisitor, {
|
|
supers: new WeakSet(),
|
|
thisBinding
|
|
});
|
|
});
|
|
}
|
|
function getSuperBinding(thisEnvFn) {
|
|
return getBinding(thisEnvFn, "supercall", () => {
|
|
const argsBinding = thisEnvFn.scope.generateUidIdentifier("args");
|
|
return arrowFunctionExpression([restElement(argsBinding)], callExpression(_super(), [spreadElement(identifier(argsBinding.name))]));
|
|
});
|
|
}
|
|
function getSuperPropBinding(thisEnvFn, isAssignment, propName) {
|
|
const op = isAssignment ? "set" : "get";
|
|
return getBinding(thisEnvFn, `superprop_${op}:${propName || ""}`, () => {
|
|
const argsList = [];
|
|
let fnBody;
|
|
if (propName) {
|
|
fnBody = memberExpression(_super(), identifier(propName));
|
|
} else {
|
|
const method = thisEnvFn.scope.generateUidIdentifier("prop");
|
|
argsList.unshift(method);
|
|
fnBody = memberExpression(_super(), identifier(method.name), true);
|
|
}
|
|
if (isAssignment) {
|
|
const valueIdent = thisEnvFn.scope.generateUidIdentifier("value");
|
|
argsList.push(valueIdent);
|
|
fnBody = assignmentExpression("=", fnBody, identifier(valueIdent.name));
|
|
}
|
|
return arrowFunctionExpression(argsList, fnBody);
|
|
});
|
|
}
|
|
function getBinding(thisEnvFn, key, init) {
|
|
const cacheKey = "binding:" + key;
|
|
let data = thisEnvFn.getData(cacheKey);
|
|
if (!data) {
|
|
const id = thisEnvFn.scope.generateUidIdentifier(key);
|
|
data = id.name;
|
|
thisEnvFn.setData(cacheKey, data);
|
|
thisEnvFn.scope.push({
|
|
id: id,
|
|
init: init(data)
|
|
});
|
|
}
|
|
return data;
|
|
}
|
|
const getScopeInformationVisitor = (0, _visitors.environmentVisitor)({
|
|
ThisExpression(child, {
|
|
thisPaths
|
|
}) {
|
|
thisPaths.push(child);
|
|
},
|
|
JSXIdentifier(child, {
|
|
thisPaths
|
|
}) {
|
|
if (child.node.name !== "this") return;
|
|
if (!child.parentPath.isJSXMemberExpression({
|
|
object: child.node
|
|
}) && !child.parentPath.isJSXOpeningElement({
|
|
name: child.node
|
|
})) {
|
|
return;
|
|
}
|
|
thisPaths.push(child);
|
|
},
|
|
CallExpression(child, {
|
|
superCalls
|
|
}) {
|
|
if (child.get("callee").isSuper()) superCalls.push(child);
|
|
},
|
|
MemberExpression(child, {
|
|
superProps
|
|
}) {
|
|
if (child.get("object").isSuper()) superProps.push(child);
|
|
},
|
|
Identifier(child, {
|
|
argumentsPaths
|
|
}) {
|
|
if (!child.isReferencedIdentifier({
|
|
name: "arguments"
|
|
})) return;
|
|
let curr = child.scope;
|
|
do {
|
|
if (curr.hasOwnBinding("arguments")) {
|
|
curr.rename("arguments");
|
|
return;
|
|
}
|
|
if (curr.path.isFunction() && !curr.path.isArrowFunctionExpression()) {
|
|
break;
|
|
}
|
|
} while (curr = curr.parent);
|
|
argumentsPaths.push(child);
|
|
},
|
|
MetaProperty(child, {
|
|
newTargetPaths
|
|
}) {
|
|
if (!child.get("meta").isIdentifier({
|
|
name: "new"
|
|
})) return;
|
|
if (!child.get("property").isIdentifier({
|
|
name: "target"
|
|
})) return;
|
|
newTargetPaths.push(child);
|
|
}
|
|
});
|
|
function getScopeInformation(fnPath) {
|
|
const thisPaths = [];
|
|
const argumentsPaths = [];
|
|
const newTargetPaths = [];
|
|
const superProps = [];
|
|
const superCalls = [];
|
|
fnPath.traverse(getScopeInformationVisitor, {
|
|
thisPaths,
|
|
argumentsPaths,
|
|
newTargetPaths,
|
|
superProps,
|
|
superCalls
|
|
});
|
|
return {
|
|
thisPaths,
|
|
argumentsPaths,
|
|
newTargetPaths,
|
|
superProps,
|
|
superCalls
|
|
};
|
|
}
|
|
function splitExportDeclaration() {
|
|
if (!this.isExportDeclaration() || this.isExportAllDeclaration()) {
|
|
throw new Error("Only default and named export declarations can be split.");
|
|
}
|
|
if (this.isExportNamedDeclaration() && this.get("specifiers").length > 0) {
|
|
throw new Error("It doesn't make sense to split exported specifiers.");
|
|
}
|
|
const declaration = this.get("declaration");
|
|
if (this.isExportDefaultDeclaration()) {
|
|
const standaloneDeclaration = declaration.isFunctionDeclaration() || declaration.isClassDeclaration();
|
|
const exportExpr = declaration.isFunctionExpression() || declaration.isClassExpression();
|
|
const scope = declaration.isScope() ? declaration.scope.parent : declaration.scope;
|
|
let id = declaration.node.id;
|
|
let needBindingRegistration = false;
|
|
if (!id) {
|
|
needBindingRegistration = true;
|
|
id = scope.generateUidIdentifier("default");
|
|
if (standaloneDeclaration || exportExpr) {
|
|
declaration.node.id = cloneNode(id);
|
|
}
|
|
} else if (exportExpr && scope.hasBinding(id.name)) {
|
|
needBindingRegistration = true;
|
|
id = scope.generateUidIdentifier(id.name);
|
|
}
|
|
const updatedDeclaration = standaloneDeclaration ? declaration.node : variableDeclaration("var", [variableDeclarator(cloneNode(id), declaration.node)]);
|
|
const updatedExportDeclaration = exportNamedDeclaration(null, [exportSpecifier(cloneNode(id), identifier("default"))]);
|
|
this.insertAfter(updatedExportDeclaration);
|
|
this.replaceWith(updatedDeclaration);
|
|
if (needBindingRegistration) {
|
|
scope.registerDeclaration(this);
|
|
}
|
|
return this;
|
|
} else if (this.get("specifiers").length > 0) {
|
|
throw new Error("It doesn't make sense to split exported specifiers.");
|
|
}
|
|
const bindingIdentifiers = declaration.getOuterBindingIdentifiers();
|
|
const specifiers = Object.keys(bindingIdentifiers).map(name => {
|
|
return exportSpecifier(identifier(name), identifier(name));
|
|
});
|
|
const aliasDeclar = exportNamedDeclaration(null, specifiers);
|
|
this.insertAfter(aliasDeclar);
|
|
this.replaceWith(declaration.node);
|
|
return this;
|
|
}
|
|
const refersOuterBindingVisitor = {
|
|
"ReferencedIdentifier|BindingIdentifier"(path, state) {
|
|
if (path.node.name !== state.name) return;
|
|
state.needsRename = true;
|
|
path.stop();
|
|
},
|
|
Scope(path, state) {
|
|
if (path.scope.hasOwnBinding(state.name)) {
|
|
path.skip();
|
|
}
|
|
}
|
|
};
|
|
function ensureFunctionName(supportUnicodeId) {
|
|
if (this.node.id) return this;
|
|
const res = getFunctionName(this.node, this.parent);
|
|
if (res == null) return this;
|
|
let {
|
|
name
|
|
} = res;
|
|
if (!supportUnicodeId && /[\uD800-\uDFFF]/.test(name)) {
|
|
return null;
|
|
}
|
|
if (name.startsWith("get ") || name.startsWith("set ")) {
|
|
return null;
|
|
}
|
|
name = toBindingIdentifierName(name.replace(/[/ ]/g, "_"));
|
|
const id = identifier(name);
|
|
inherits(id, res.originalNode);
|
|
const state = {
|
|
needsRename: false,
|
|
name
|
|
};
|
|
const {
|
|
scope
|
|
} = this;
|
|
const binding = scope.getOwnBinding(name);
|
|
if (binding) {
|
|
if (binding.kind === "param") {
|
|
state.needsRename = true;
|
|
} else {}
|
|
} else if (scope.parent.hasBinding(name) || scope.hasGlobal(name)) {
|
|
this.traverse(refersOuterBindingVisitor, state);
|
|
}
|
|
if (!state.needsRename) {
|
|
this.node.id = id;
|
|
scope.getProgramParent().references[id.name] = true;
|
|
return this;
|
|
}
|
|
if (scope.hasBinding(id.name) && !scope.hasGlobal(id.name)) {
|
|
scope.rename(id.name);
|
|
this.node.id = id;
|
|
scope.getProgramParent().references[id.name] = true;
|
|
return this;
|
|
}
|
|
if (!isFunction(this.node)) return null;
|
|
const key = scope.generateUidIdentifier(id.name);
|
|
const params = [];
|
|
for (let i = 0, len = getFunctionArity(this.node); i < len; i++) {
|
|
params.push(scope.generateUidIdentifier("x"));
|
|
}
|
|
const call = _template.default.expression.ast`
|
|
(function (${key}) {
|
|
function ${id}(${params}) {
|
|
return ${cloneNode(key)}.apply(this, arguments);
|
|
}
|
|
|
|
${cloneNode(id)}.toString = function () {
|
|
return ${cloneNode(key)}.toString();
|
|
}
|
|
|
|
return ${cloneNode(id)};
|
|
})(${toExpression(this.node)})
|
|
`;
|
|
return this.replaceWith(call)[0].get("arguments.0");
|
|
}
|
|
function getFunctionArity(node) {
|
|
const count = node.params.findIndex(param => isAssignmentPattern(param) || isRestElement(param));
|
|
return count === -1 ? node.params.length : count;
|
|
}
|
|
|
|
//# sourceMappingURL=conversion.js.map
|