Files
rspade_system/node_modules/@babel/helper-define-polyfill-provider/lib/utils.js

386 lines
12 KiB
JavaScript
Executable File

"use strict";
exports.__esModule = true;
exports.createUtilsGetter = createUtilsGetter;
exports.getImportSource = getImportSource;
exports.getRequireSource = getRequireSource;
exports.has = has;
exports.intersection = intersection;
exports.resolveInstance = resolveInstance;
exports.resolveKey = resolveKey;
exports.resolveSource = resolveSource;
var _babel = _interopRequireWildcard(require("@babel/core"));
function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function (e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, default: e }; if (null === e || "object" != typeof e && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (const t in e) "default" !== t && {}.hasOwnProperty.call(e, t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, t)) && (i.get || i.set) ? o(f, t, i) : f[t] = e[t]); return f; })(e, t); }
const {
types: t,
template: template
} = _babel.default || _babel;
function intersection(a, b) {
const result = new Set();
a.forEach(v => b.has(v) && result.add(v));
return result;
}
function has(object, key) {
return Object.prototype.hasOwnProperty.call(object, key);
}
function resolve(path, resolved = new Set()) {
if (resolved.has(path)) return;
resolved.add(path);
if (path.isVariableDeclarator()) {
if (path.get("id").isIdentifier()) {
return resolve(path.get("init"), resolved);
}
} else if (path.isReferencedIdentifier()) {
const binding = path.scope.getBinding(path.node.name);
if (!binding) return path;
if (!binding.constant) return;
return resolve(binding.path, resolved);
}
return path;
}
function resolveId(path) {
if (path.isIdentifier() && !path.scope.hasBinding(path.node.name, /* noGlobals */true)) {
return path.node.name;
}
const resolved = resolve(path);
if (resolved != null && resolved.isIdentifier()) {
return resolved.node.name;
}
}
function resolveKey(path, computed = false) {
const {
scope
} = path;
if (path.isStringLiteral()) return path.node.value;
const isIdentifier = path.isIdentifier();
if (isIdentifier && !(computed || path.parent.computed)) {
return path.node.name;
}
if (computed && path.isMemberExpression() && path.get("object").isIdentifier({
name: "Symbol"
}) && !scope.hasBinding("Symbol", /* noGlobals */true)) {
const sym = resolveKey(path.get("property"), path.node.computed);
if (sym) return "Symbol." + sym;
}
if (isIdentifier ? scope.hasBinding(path.node.name, /* noGlobals */true) : path.isPure()) {
const {
value
} = path.evaluate();
if (typeof value === "string") return value;
}
}
function resolveInstance(obj) {
const source = resolveSource(obj);
return source.placement === "prototype" ? source.id : null;
}
function resolveSource(obj) {
if (obj.isMemberExpression() && obj.get("property").isIdentifier({
name: "prototype"
})) {
const id = resolveId(obj.get("object"));
if (id) {
return {
id,
placement: "prototype"
};
}
return {
id: null,
placement: null
};
}
const id = resolveId(obj);
if (id) {
return {
id,
placement: "static"
};
}
const path = resolve(obj);
switch (path == null ? void 0 : path.type) {
case "NullLiteral":
return {
id: null,
placement: null
};
case "RegExpLiteral":
return {
id: "RegExp",
placement: "prototype"
};
case "StringLiteral":
case "TemplateLiteral":
return {
id: "String",
placement: "prototype"
};
case "NumericLiteral":
return {
id: "Number",
placement: "prototype"
};
case "BooleanLiteral":
return {
id: "Boolean",
placement: "prototype"
};
case "BigIntLiteral":
return {
id: "BigInt",
placement: "prototype"
};
case "ObjectExpression":
return {
id: "Object",
placement: "prototype"
};
case "ArrayExpression":
return {
id: "Array",
placement: "prototype"
};
case "FunctionExpression":
case "ArrowFunctionExpression":
case "ClassExpression":
return {
id: "Function",
placement: "prototype"
};
// new Constructor() -> resolve the constructor name
case "NewExpression":
{
const calleeId = resolveId(path.get("callee"));
if (calleeId) return {
id: calleeId,
placement: "prototype"
};
return {
id: null,
placement: null
};
}
// Unary expressions -> result type depends on operator
case "UnaryExpression":
{
const {
operator
} = path.node;
if (operator === "typeof") return {
id: "String",
placement: "prototype"
};
if (operator === "!" || operator === "delete") return {
id: "Boolean",
placement: "prototype"
};
// Unary + always produces Number (throws on BigInt)
if (operator === "+") return {
id: "Number",
placement: "prototype"
};
// Unary - and ~ can produce Number or BigInt depending on operand
if (operator === "-" || operator === "~") {
const arg = resolveInstance(path.get("argument"));
if (arg === "BigInt") return {
id: "BigInt",
placement: "prototype"
};
if (arg !== null) return {
id: "Number",
placement: "prototype"
};
return {
id: null,
placement: null
};
}
return {
id: null,
placement: null
};
}
// ++i, i++ produce Number or BigInt depending on the argument
case "UpdateExpression":
{
const arg = resolveInstance(path.get("argument"));
if (arg === "BigInt") return {
id: "BigInt",
placement: "prototype"
};
if (arg !== null) return {
id: "Number",
placement: "prototype"
};
return {
id: null,
placement: null
};
}
// Binary expressions -> result type depends on operator
case "BinaryExpression":
{
const {
operator
} = path.node;
if (operator === "==" || operator === "!=" || operator === "===" || operator === "!==" || operator === "<" || operator === ">" || operator === "<=" || operator === ">=" || operator === "instanceof" || operator === "in") {
return {
id: "Boolean",
placement: "prototype"
};
}
// >>> always produces Number
if (operator === ">>>") {
return {
id: "Number",
placement: "prototype"
};
}
// Arithmetic and bitwise operators can produce Number or BigInt
if (operator === "-" || operator === "*" || operator === "/" || operator === "%" || operator === "**" || operator === "&" || operator === "|" || operator === "^" || operator === "<<" || operator === ">>") {
const left = resolveInstance(path.get("left"));
const right = resolveInstance(path.get("right"));
if (left === "BigInt" && right === "BigInt") {
return {
id: "BigInt",
placement: "prototype"
};
}
if (left !== null && right !== null) {
return {
id: "Number",
placement: "prototype"
};
}
return {
id: null,
placement: null
};
}
// + depends on operand types: string wins, otherwise number or bigint
if (operator === "+") {
const left = resolveInstance(path.get("left"));
const right = resolveInstance(path.get("right"));
if (left === "String" || right === "String") {
return {
id: "String",
placement: "prototype"
};
}
if (left === "Number" && right === "Number") {
return {
id: "Number",
placement: "prototype"
};
}
if (left === "BigInt" && right === "BigInt") {
return {
id: "BigInt",
placement: "prototype"
};
}
}
return {
id: null,
placement: null
};
}
// (a, b, c) -> the result is the last expression
case "SequenceExpression":
{
const expressions = path.get("expressions");
return resolveSource(expressions[expressions.length - 1]);
}
// a = b -> the result is the right side
case "AssignmentExpression":
{
if (path.node.operator === "=") {
return resolveSource(path.get("right"));
}
return {
id: null,
placement: null
};
}
// a ? b : c -> if both branches resolve to the same type, use it
case "ConditionalExpression":
{
const consequent = resolveSource(path.get("consequent"));
const alternate = resolveSource(path.get("alternate"));
if (consequent.id && consequent.id === alternate.id) {
return consequent;
}
return {
id: null,
placement: null
};
}
// (expr) -> unwrap parenthesized expressions
case "ParenthesizedExpression":
return resolveSource(path.get("expression"));
// TypeScript / Flow type wrappers -> unwrap to the inner expression
case "TSAsExpression":
case "TSSatisfiesExpression":
case "TSNonNullExpression":
case "TSInstantiationExpression":
case "TSTypeAssertion":
case "TypeCastExpression":
return resolveSource(path.get("expression"));
}
return {
id: null,
placement: null
};
}
function getImportSource({
node
}) {
if (node.specifiers.length === 0) return node.source.value;
}
function getRequireSource({
node
}) {
if (!t.isExpressionStatement(node)) return;
const {
expression
} = node;
if (t.isCallExpression(expression) && t.isIdentifier(expression.callee) && expression.callee.name === "require" && expression.arguments.length === 1 && t.isStringLiteral(expression.arguments[0])) {
return expression.arguments[0].value;
}
}
function hoist(node) {
// @ts-expect-error
node._blockHoist = 3;
return node;
}
function createUtilsGetter(cache) {
return path => {
const prog = path.findParent(p => p.isProgram());
return {
injectGlobalImport(url, moduleName) {
cache.storeAnonymous(prog, url, moduleName, (isScript, source) => {
return isScript ? template.statement.ast`require(${source})` : t.importDeclaration([], source);
});
},
injectNamedImport(url, name, hint = name, moduleName) {
return cache.storeNamed(prog, url, name, moduleName, (isScript, source, name) => {
const id = prog.scope.generateUidIdentifier(hint);
return {
node: isScript ? hoist(template.statement.ast`
var ${id} = require(${source}).${name}
`) : t.importDeclaration([t.importSpecifier(id, name)], source),
name: id.name
};
});
},
injectDefaultImport(url, hint = url, moduleName) {
return cache.storeNamed(prog, url, "default", moduleName, (isScript, source) => {
const id = prog.scope.generateUidIdentifier(hint);
return {
node: isScript ? hoist(template.statement.ast`var ${id} = require(${source})`) : t.importDeclaration([t.importDefaultSpecifier(id)], source),
name: id.name
};
});
}
};
};
}