a2f41f5978c7fa3a3ee6705ee39371995ed94ecb.svn-base
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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.rewriteModuleStatementsAndPrepareHeader = rewriteModuleStatementsAndPrepareHeader;
exports.ensureStatementsHoisted = ensureStatementsHoisted;
exports.wrapInterop = wrapInterop;
exports.buildNamespaceInitStatements = buildNamespaceInitStatements;
Object.defineProperty(exports, "isModule", {
enumerable: true,
get: function () {
return _helperModuleImports.isModule;
}
});
Object.defineProperty(exports, "rewriteThis", {
enumerable: true,
get: function () {
return _rewriteThis.default;
}
});
Object.defineProperty(exports, "hasExports", {
enumerable: true,
get: function () {
return _normalizeAndLoadMetadata.hasExports;
}
});
Object.defineProperty(exports, "isSideEffectImport", {
enumerable: true,
get: function () {
return _normalizeAndLoadMetadata.isSideEffectImport;
}
});
Object.defineProperty(exports, "getModuleName", {
enumerable: true,
get: function () {
return _getModuleName.default;
}
});
var _assert = _interopRequireDefault(require("assert"));
var t = _interopRequireWildcard(require("@babel/types"));
var _template = _interopRequireDefault(require("@babel/template"));
var _chunk = _interopRequireDefault(require("lodash/chunk"));
var _helperModuleImports = require("@babel/helper-module-imports");
var _rewriteThis = _interopRequireDefault(require("./rewrite-this"));
var _rewriteLiveReferences = _interopRequireDefault(require("./rewrite-live-references"));
var _normalizeAndLoadMetadata = _interopRequireWildcard(require("./normalize-and-load-metadata"));
var _getModuleName = _interopRequireDefault(require("./get-module-name"));
function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function rewriteModuleStatementsAndPrepareHeader(path, {
exportName,
strict,
allowTopLevelThis,
strictMode,
loose,
noInterop,
lazy,
esNamespaceOnly
}) {
(0, _assert.default)((0, _helperModuleImports.isModule)(path), "Cannot process module statements in a script");
path.node.sourceType = "script";
const meta = (0, _normalizeAndLoadMetadata.default)(path, exportName, {
noInterop,
loose,
lazy,
esNamespaceOnly
});
if (!allowTopLevelThis) {
(0, _rewriteThis.default)(path);
}
(0, _rewriteLiveReferences.default)(path, meta);
if (strictMode !== false) {
const hasStrict = path.node.directives.some(directive => {
return directive.value.value === "use strict";
});
if (!hasStrict) {
path.unshiftContainer("directives", t.directive(t.directiveLiteral("use strict")));
}
}
const headers = [];
if ((0, _normalizeAndLoadMetadata.hasExports)(meta) && !strict) {
headers.push(buildESModuleHeader(meta, loose));
}
const nameList = buildExportNameListDeclaration(path, meta);
if (nameList) {
meta.exportNameListName = nameList.name;
headers.push(nameList.statement);
}
headers.push(...buildExportInitializationStatements(path, meta, loose));
return {
meta,
headers
};
}
function ensureStatementsHoisted(statements) {
statements.forEach(header => {
header._blockHoist = 3;
});
}
function wrapInterop(programPath, expr, type) {
if (type === "none") {
return null;
}
let helper;
if (type === "default") {
helper = "interopRequireDefault";
} else if (type === "namespace") {
helper = "interopRequireWildcard";
} else {
throw new Error(`Unknown interop: ${type}`);
}
return t.callExpression(programPath.hub.addHelper(helper), [expr]);
}
function buildNamespaceInitStatements(metadata, sourceMetadata, loose = false) {
const statements = [];
let srcNamespace = t.identifier(sourceMetadata.name);
if (sourceMetadata.lazy) srcNamespace = t.callExpression(srcNamespace, []);
for (const localName of sourceMetadata.importsNamespace) {
if (localName === sourceMetadata.name) continue;
statements.push(_template.default.statement`var NAME = SOURCE;`({
NAME: localName,
SOURCE: t.cloneNode(srcNamespace)
}));
}
if (loose) {
statements.push(...buildReexportsFromMeta(metadata, sourceMetadata, loose));
}
for (const exportName of sourceMetadata.reexportNamespace) {
statements.push((sourceMetadata.lazy ? _template.default.statement`
Object.defineProperty(EXPORTS, "NAME", {
enumerable: true,
get: function() {
return NAMESPACE;
}
});
` : _template.default.statement`EXPORTS.NAME = NAMESPACE;`)({
EXPORTS: metadata.exportName,
NAME: exportName,
NAMESPACE: t.cloneNode(srcNamespace)
}));
}
if (sourceMetadata.reexportAll) {
const statement = buildNamespaceReexport(metadata, t.cloneNode(srcNamespace), loose);
statement.loc = sourceMetadata.reexportAll.loc;
statements.push(statement);
}
return statements;
}
const getTemplateForReexport = loose => {
return loose ? _template.default.statement`EXPORTS.EXPORT_NAME = NAMESPACE.IMPORT_NAME;` : (0, _template.default)`
Object.defineProperty(EXPORTS, "EXPORT_NAME", {
enumerable: true,
get: function() {
return NAMESPACE.IMPORT_NAME;
},
});
`;
};
const buildReexportsFromMeta = (meta, metadata, loose) => {
const namespace = metadata.lazy ? t.callExpression(t.identifier(metadata.name), []) : t.identifier(metadata.name);
const templateForCurrentMode = getTemplateForReexport(loose);
return Array.from(metadata.reexports, ([exportName, importName]) => templateForCurrentMode({
EXPORTS: meta.exportName,
EXPORT_NAME: exportName,
NAMESPACE: t.cloneNode(namespace),
IMPORT_NAME: importName
}));
};
function buildESModuleHeader(metadata, enumerable = false) {
return (enumerable ? _template.default.statement`
EXPORTS.__esModule = true;
` : _template.default.statement`
Object.defineProperty(EXPORTS, "__esModule", {
value: true,
});
`)({
EXPORTS: metadata.exportName
});
}
function buildNamespaceReexport(metadata, namespace, loose) {
return (loose ? _template.default.statement`
Object.keys(NAMESPACE).forEach(function(key) {
if (key === "default" || key === "__esModule") return;
VERIFY_NAME_LIST;
EXPORTS[key] = NAMESPACE[key];
});
` : _template.default.statement`
Object.keys(NAMESPACE).forEach(function(key) {
if (key === "default" || key === "__esModule") return;
VERIFY_NAME_LIST;
Object.defineProperty(EXPORTS, key, {
enumerable: true,
get: function() {
return NAMESPACE[key];
},
});
});
`)({
NAMESPACE: namespace,
EXPORTS: metadata.exportName,
VERIFY_NAME_LIST: metadata.exportNameListName ? (0, _template.default)`
if (Object.prototype.hasOwnProperty.call(EXPORTS_LIST, key)) return;
`({
EXPORTS_LIST: metadata.exportNameListName
}) : null
});
}
function buildExportNameListDeclaration(programPath, metadata) {
const exportedVars = Object.create(null);
for (const data of metadata.local.values()) {
for (const name of data.names) {
exportedVars[name] = true;
}
}
let hasReexport = false;
for (const data of metadata.source.values()) {
for (const exportName of data.reexports.keys()) {
exportedVars[exportName] = true;
}
for (const exportName of data.reexportNamespace) {
exportedVars[exportName] = true;
}
hasReexport = hasReexport || data.reexportAll;
}
if (!hasReexport || Object.keys(exportedVars).length === 0) return null;
const name = programPath.scope.generateUidIdentifier("exportNames");
delete exportedVars.default;
return {
name: name.name,
statement: t.variableDeclaration("var", [t.variableDeclarator(name, t.valueToNode(exportedVars))])
};
}
function buildExportInitializationStatements(programPath, metadata, loose = false) {
const initStatements = [];
const exportNames = [];
for (const [localName, data] of metadata.local) {
if (data.kind === "import") {} else if (data.kind === "hoisted") {
initStatements.push(buildInitStatement(metadata, data.names, t.identifier(localName)));
} else {
exportNames.push(...data.names);
}
}
for (const data of metadata.source.values()) {
if (!loose) {
initStatements.push(...buildReexportsFromMeta(metadata, data, loose));
}
for (const exportName of data.reexportNamespace) {
exportNames.push(exportName);
}
}
initStatements.push(...(0, _chunk.default)(exportNames, 100).map(members => {
return buildInitStatement(metadata, members, programPath.scope.buildUndefinedNode());
}));
return initStatements;
}
function buildInitStatement(metadata, exportNames, initExpr) {
return t.expressionStatement(exportNames.reduce((acc, exportName) => _template.default.expression`EXPORTS.NAME = VALUE`({
EXPORTS: metadata.exportName,
NAME: exportName,
VALUE: acc
}), initExpr));
}