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terminal-cv/node_modules/@babel/helper-module-transforms/lib/normalize-and-load-metadata.js

398 lines
12 KiB

"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = normalizeModuleAndLoadMetadata;
exports.hasExports = hasExports;
exports.isSideEffectImport = isSideEffectImport;
exports.validateImportInteropOption = validateImportInteropOption;
var _path = require("path");
var _helperValidatorIdentifier = require("@babel/helper-validator-identifier");
var _helperSplitExportDeclaration = require("@babel/helper-split-export-declaration");
function hasExports(metadata) {
return metadata.hasExports;
}
function isSideEffectImport(source) {
return source.imports.size === 0 && source.importsNamespace.size === 0 && source.reexports.size === 0 && source.reexportNamespace.size === 0 && !source.reexportAll;
}
function validateImportInteropOption(importInterop) {
if (typeof importInterop !== "function" && importInterop !== "none" && importInterop !== "babel" && importInterop !== "node") {
throw new Error(`.importInterop must be one of "none", "babel", "node", or a function returning one of those values (received ${importInterop}).`);
}
return importInterop;
}
function resolveImportInterop(importInterop, source) {
if (typeof importInterop === "function") {
return validateImportInteropOption(importInterop(source));
}
return importInterop;
}
function normalizeModuleAndLoadMetadata(programPath, exportName, {
importInterop,
initializeReexports = false,
lazy = false,
esNamespaceOnly = false
}) {
if (!exportName) {
exportName = programPath.scope.generateUidIdentifier("exports").name;
}
const stringSpecifiers = new Set();
nameAnonymousExports(programPath);
const {
local,
source,
hasExports
} = getModuleMetadata(programPath, {
initializeReexports,
lazy
}, stringSpecifiers);
removeModuleDeclarations(programPath);
for (const [, metadata] of source) {
if (metadata.importsNamespace.size > 0) {
metadata.name = metadata.importsNamespace.values().next().value;
}
const resolvedInterop = resolveImportInterop(importInterop, metadata.source);
if (resolvedInterop === "none") {
metadata.interop = "none";
} else if (resolvedInterop === "node" && metadata.interop === "namespace") {
metadata.interop = "node-namespace";
} else if (resolvedInterop === "node" && metadata.interop === "default") {
metadata.interop = "node-default";
} else if (esNamespaceOnly && metadata.interop === "namespace") {
metadata.interop = "default";
}
}
return {
exportName,
exportNameListName: null,
hasExports,
local,
source,
stringSpecifiers
};
}
function getExportSpecifierName(path, stringSpecifiers) {
if (path.isIdentifier()) {
return path.node.name;
} else if (path.isStringLiteral()) {
const stringValue = path.node.value;
if (!(0, _helperValidatorIdentifier.isIdentifierName)(stringValue)) {
stringSpecifiers.add(stringValue);
}
return stringValue;
} else {
throw new Error(`Expected export specifier to be either Identifier or StringLiteral, got ${path.node.type}`);
}
}
function assertExportSpecifier(path) {
if (path.isExportSpecifier()) {
return;
} else if (path.isExportNamespaceSpecifier()) {
throw path.buildCodeFrameError("Export namespace should be first transformed by `@babel/plugin-proposal-export-namespace-from`.");
} else {
throw path.buildCodeFrameError("Unexpected export specifier type");
}
}
function getModuleMetadata(programPath, {
lazy,
initializeReexports
}, stringSpecifiers) {
const localData = getLocalExportMetadata(programPath, initializeReexports, stringSpecifiers);
const sourceData = new Map();
const getData = sourceNode => {
const source = sourceNode.value;
let data = sourceData.get(source);
if (!data) {
data = {
name: programPath.scope.generateUidIdentifier((0, _path.basename)(source, (0, _path.extname)(source))).name,
interop: "none",
loc: null,
imports: new Map(),
importsNamespace: new Set(),
reexports: new Map(),
reexportNamespace: new Set(),
reexportAll: null,
lazy: false,
source
};
sourceData.set(source, data);
}
return data;
};
let hasExports = false;
programPath.get("body").forEach(child => {
if (child.isImportDeclaration()) {
const data = getData(child.node.source);
if (!data.loc) data.loc = child.node.loc;
child.get("specifiers").forEach(spec => {
if (spec.isImportDefaultSpecifier()) {
const localName = spec.get("local").node.name;
data.imports.set(localName, "default");
const reexport = localData.get(localName);
if (reexport) {
localData.delete(localName);
reexport.names.forEach(name => {
data.reexports.set(name, "default");
});
}
} else if (spec.isImportNamespaceSpecifier()) {
const localName = spec.get("local").node.name;
data.importsNamespace.add(localName);
const reexport = localData.get(localName);
if (reexport) {
localData.delete(localName);
reexport.names.forEach(name => {
data.reexportNamespace.add(name);
});
}
} else if (spec.isImportSpecifier()) {
const importName = getExportSpecifierName(spec.get("imported"), stringSpecifiers);
const localName = spec.get("local").node.name;
data.imports.set(localName, importName);
const reexport = localData.get(localName);
if (reexport) {
localData.delete(localName);
reexport.names.forEach(name => {
data.reexports.set(name, importName);
});
}
}
});
} else if (child.isExportAllDeclaration()) {
hasExports = true;
const data = getData(child.node.source);
if (!data.loc) data.loc = child.node.loc;
data.reexportAll = {
loc: child.node.loc
};
} else if (child.isExportNamedDeclaration() && child.node.source) {
hasExports = true;
const data = getData(child.node.source);
if (!data.loc) data.loc = child.node.loc;
child.get("specifiers").forEach(spec => {
assertExportSpecifier(spec);
const importName = getExportSpecifierName(spec.get("local"), stringSpecifiers);
const exportName = getExportSpecifierName(spec.get("exported"), stringSpecifiers);
data.reexports.set(exportName, importName);
if (exportName === "__esModule") {
throw spec.get("exported").buildCodeFrameError('Illegal export "__esModule".');
}
});
} else if (child.isExportNamedDeclaration() || child.isExportDefaultDeclaration()) {
hasExports = true;
}
});
for (const metadata of sourceData.values()) {
let needsDefault = false;
let needsNamed = false;
if (metadata.importsNamespace.size > 0) {
needsDefault = true;
needsNamed = true;
}
if (metadata.reexportAll) {
needsNamed = true;
}
for (const importName of metadata.imports.values()) {
if (importName === "default") needsDefault = true;else needsNamed = true;
}
for (const importName of metadata.reexports.values()) {
if (importName === "default") needsDefault = true;else needsNamed = true;
}
if (needsDefault && needsNamed) {
metadata.interop = "namespace";
} else if (needsDefault) {
metadata.interop = "default";
}
}
for (const [source, metadata] of sourceData) {
if (lazy !== false && !(isSideEffectImport(metadata) || metadata.reexportAll)) {
if (lazy === true) {
metadata.lazy = !/\./.test(source);
} else if (Array.isArray(lazy)) {
metadata.lazy = lazy.indexOf(source) !== -1;
} else if (typeof lazy === "function") {
metadata.lazy = lazy(source);
} else {
throw new Error(`.lazy must be a boolean, string array, or function`);
}
}
}
return {
hasExports,
local: localData,
source: sourceData
};
}
function getLocalExportMetadata(programPath, initializeReexports, stringSpecifiers) {
const bindingKindLookup = new Map();
programPath.get("body").forEach(child => {
let kind;
if (child.isImportDeclaration()) {
kind = "import";
} else {
if (child.isExportDefaultDeclaration()) child = child.get("declaration");
if (child.isExportNamedDeclaration()) {
if (child.node.declaration) {
child = child.get("declaration");
} else if (initializeReexports && child.node.source && child.get("source").isStringLiteral()) {
child.get("specifiers").forEach(spec => {
assertExportSpecifier(spec);
bindingKindLookup.set(spec.get("local").node.name, "block");
});
return;
}
}
if (child.isFunctionDeclaration()) {
kind = "hoisted";
} else if (child.isClassDeclaration()) {
kind = "block";
} else if (child.isVariableDeclaration({
kind: "var"
})) {
kind = "var";
} else if (child.isVariableDeclaration()) {
kind = "block";
} else {
return;
}
}
Object.keys(child.getOuterBindingIdentifiers()).forEach(name => {
bindingKindLookup.set(name, kind);
});
});
const localMetadata = new Map();
const getLocalMetadata = idPath => {
const localName = idPath.node.name;
let metadata = localMetadata.get(localName);
if (!metadata) {
const kind = bindingKindLookup.get(localName);
if (kind === undefined) {
throw idPath.buildCodeFrameError(`Exporting local "${localName}", which is not declared.`);
}
metadata = {
names: [],
kind
};
localMetadata.set(localName, metadata);
}
return metadata;
};
programPath.get("body").forEach(child => {
if (child.isExportNamedDeclaration() && (initializeReexports || !child.node.source)) {
if (child.node.declaration) {
const declaration = child.get("declaration");
const ids = declaration.getOuterBindingIdentifierPaths();
Object.keys(ids).forEach(name => {
if (name === "__esModule") {
throw declaration.buildCodeFrameError('Illegal export "__esModule".');
}
getLocalMetadata(ids[name]).names.push(name);
});
} else {
child.get("specifiers").forEach(spec => {
const local = spec.get("local");
const exported = spec.get("exported");
const localMetadata = getLocalMetadata(local);
const exportName = getExportSpecifierName(exported, stringSpecifiers);
if (exportName === "__esModule") {
throw exported.buildCodeFrameError('Illegal export "__esModule".');
}
localMetadata.names.push(exportName);
});
}
} else if (child.isExportDefaultDeclaration()) {
const declaration = child.get("declaration");
if (declaration.isFunctionDeclaration() || declaration.isClassDeclaration()) {
getLocalMetadata(declaration.get("id")).names.push("default");
} else {
throw declaration.buildCodeFrameError("Unexpected default expression export.");
}
}
});
return localMetadata;
}
function nameAnonymousExports(programPath) {
programPath.get("body").forEach(child => {
if (!child.isExportDefaultDeclaration()) return;
(0, _helperSplitExportDeclaration.default)(child);
});
}
function removeModuleDeclarations(programPath) {
programPath.get("body").forEach(child => {
if (child.isImportDeclaration()) {
child.remove();
} else if (child.isExportNamedDeclaration()) {
if (child.node.declaration) {
child.node.declaration._blockHoist = child.node._blockHoist;
child.replaceWith(child.node.declaration);
} else {
child.remove();
}
} else if (child.isExportDefaultDeclaration()) {
const declaration = child.get("declaration");
if (declaration.isFunctionDeclaration() || declaration.isClassDeclaration()) {
declaration._blockHoist = child.node._blockHoist;
child.replaceWith(declaration);
} else {
throw declaration.buildCodeFrameError("Unexpected default expression export.");
}
} else if (child.isExportAllDeclaration()) {
child.remove();
}
});
}