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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = _default;
var _helperGetFunctionArity = require("@babel/helper-get-function-arity");
var _template = require("@babel/template");
var _t = require("@babel/types");
const {
NOT_LOCAL_BINDING,
cloneNode,
identifier,
isAssignmentExpression,
isFunction,
isIdentifier,
isLiteral,
isNullLiteral,
isObjectMethod,
isObjectProperty,
isRegExpLiteral,
isTemplateLiteral,
isVariableDeclarator,
toBindingIdentifierName
} = _t;
const buildPropertyMethodAssignmentWrapper = (0, _template.default)(`
(function (FUNCTION_KEY) {
function FUNCTION_ID() {
return FUNCTION_KEY.apply(this, arguments);
}
FUNCTION_ID.toString = function () {
return FUNCTION_KEY.toString();
}
return FUNCTION_ID;
})(FUNCTION)
`);
const buildGeneratorPropertyMethodAssignmentWrapper = (0, _template.default)(`
(function (FUNCTION_KEY) {
function* FUNCTION_ID() {
return yield* FUNCTION_KEY.apply(this, arguments);
}
FUNCTION_ID.toString = function () {
return FUNCTION_KEY.toString();
};
return FUNCTION_ID;
})(FUNCTION)
`);
const visitor = {
"ReferencedIdentifier|BindingIdentifier"(path, state) {
if (path.node.name !== state.name) return;
const localDeclar = path.scope.getBindingIdentifier(state.name);
if (localDeclar !== state.outerDeclar) return;
state.selfReference = true;
path.stop();
}
};
function getNameFromLiteralId(id) {
if (isNullLiteral(id)) {
return "null";
}
if (isRegExpLiteral(id)) {
return `_${id.pattern}_${id.flags}`;
}
if (isTemplateLiteral(id)) {
return id.quasis.map(quasi => quasi.value.raw).join("");
}
if (id.value !== undefined) {
return id.value + "";
}
return "";
}
function wrap(state, method, id, scope) {
if (state.selfReference) {
if (scope.hasBinding(id.name) && !scope.hasGlobal(id.name)) {
scope.rename(id.name);
} else {
if (!isFunction(method)) return;
let build = buildPropertyMethodAssignmentWrapper;
if (method.generator) {
build = buildGeneratorPropertyMethodAssignmentWrapper;
}
const template = build({
FUNCTION: method,
FUNCTION_ID: id,
FUNCTION_KEY: scope.generateUidIdentifier(id.name)
}).expression;
const params = template.callee.body.body[0].params;
for (let i = 0, len = (0, _helperGetFunctionArity.default)(method); i < len; i++) {
params.push(scope.generateUidIdentifier("x"));
}
return template;
}
}
method.id = id;
scope.getProgramParent().references[id.name] = true;
}
function visit(node, name, scope) {
const state = {
selfAssignment: false,
selfReference: false,
outerDeclar: scope.getBindingIdentifier(name),
references: [],
name: name
};
const binding = scope.getOwnBinding(name);
if (binding) {
if (binding.kind === "param") {
state.selfReference = true;
} else {}
} else if (state.outerDeclar || scope.hasGlobal(name)) {
scope.traverse(node, visitor, state);
}
return state;
}
function _default({
node,
parent,
scope,
id
}, localBinding = false) {
if (node.id) return;
if ((isObjectProperty(parent) || isObjectMethod(parent, {
kind: "method"
})) && (!parent.computed || isLiteral(parent.key))) {
id = parent.key;
} else if (isVariableDeclarator(parent)) {
id = parent.id;
if (isIdentifier(id) && !localBinding) {
const binding = scope.parent.getBinding(id.name);
if (binding && binding.constant && scope.getBinding(id.name) === binding) {
node.id = cloneNode(id);
node.id[NOT_LOCAL_BINDING] = true;
return;
}
}
} else if (isAssignmentExpression(parent, {
operator: "="
})) {
id = parent.left;
} else if (!id) {
return;
}
let name;
if (id && isLiteral(id)) {
name = getNameFromLiteralId(id);
} else if (id && isIdentifier(id)) {
name = id.name;
}
if (name === undefined) {
return;
}
name = toBindingIdentifierName(name);
id = identifier(name);
id[NOT_LOCAL_BINDING] = true;
const state = visit(node, name, scope);
return wrap(state, node, id, scope) || node;
}