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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.buildNamespaceInitStatements = buildNamespaceInitStatements;
exports.ensureStatementsHoisted = ensureStatementsHoisted;
Object.defineProperty(exports, "getModuleName", {
enumerable: true,
get: function () {
return _getModuleName.default;
}
});
Object.defineProperty(exports, "hasExports", {
enumerable: true,
get: function () {
return _normalizeAndLoadMetadata.hasExports;
}
});
Object.defineProperty(exports, "isModule", {
enumerable: true,
get: function () {
return _helperModuleImports.isModule;
}
});
Object.defineProperty(exports, "isSideEffectImport", {
enumerable: true,
get: function () {
return _normalizeAndLoadMetadata.isSideEffectImport;
}
});
exports.rewriteModuleStatementsAndPrepareHeader = rewriteModuleStatementsAndPrepareHeader;
Object.defineProperty(exports, "rewriteThis", {
enumerable: true,
get: function () {
return _rewriteThis.default;
}
});
exports.wrapInterop = wrapInterop;
var _assert = require("assert");
var _t = require("@babel/types");
var _template = require("@babel/template");
var _helperModuleImports = require("@babel/helper-module-imports");
var _rewriteThis = require("./rewrite-this");
var _rewriteLiveReferences = require("./rewrite-live-references");
var _normalizeAndLoadMetadata = require("./normalize-and-load-metadata");
var _getModuleName = require("./get-module-name");
const {
booleanLiteral,
callExpression,
cloneNode,
directive,
directiveLiteral,
expressionStatement,
identifier,
isIdentifier,
memberExpression,
stringLiteral,
valueToNode,
variableDeclaration,
variableDeclarator
} = _t;
function rewriteModuleStatementsAndPrepareHeader(path, {
loose,
exportName,
strict,
allowTopLevelThis,
strictMode,
noInterop,
importInterop = noInterop ? "none" : "babel",
lazy,
esNamespaceOnly,
filename,
constantReexports = loose,
enumerableModuleMeta = loose,
noIncompleteNsImportDetection
}) {
(0, _normalizeAndLoadMetadata.validateImportInteropOption)(importInterop);
_assert((0, _helperModuleImports.isModule)(path), "Cannot process module statements in a script");
path.node.sourceType = "script";
const meta = (0, _normalizeAndLoadMetadata.default)(path, exportName, {
importInterop,
initializeReexports: constantReexports,
lazy,
esNamespaceOnly,
filename
});
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", directive(directiveLiteral("use strict")));
}
}
const headers = [];
if ((0, _normalizeAndLoadMetadata.hasExports)(meta) && !strict) {
headers.push(buildESModuleHeader(meta, enumerableModuleMeta));
}
const nameList = buildExportNameListDeclaration(path, meta);
if (nameList) {
meta.exportNameListName = nameList.name;
headers.push(nameList.statement);
}
headers.push(...buildExportInitializationStatements(path, meta, constantReexports, noIncompleteNsImportDetection));
return {
meta,
headers
};
}
function ensureStatementsHoisted(statements) {
statements.forEach(header => {
header._blockHoist = 3;
});
}
function wrapInterop(programPath, expr, type) {
if (type === "none") {
return null;
}
if (type === "node-namespace") {
return callExpression(programPath.hub.addHelper("interopRequireWildcard"), [expr, booleanLiteral(true)]);
} else if (type === "node-default") {
return null;
}
let helper;
if (type === "default") {
helper = "interopRequireDefault";
} else if (type === "namespace") {
helper = "interopRequireWildcard";
} else {
throw new Error(`Unknown interop: ${type}`);
}
return callExpression(programPath.hub.addHelper(helper), [expr]);
}
function buildNamespaceInitStatements(metadata, sourceMetadata, constantReexports = false) {
const statements = [];
let srcNamespace = identifier(sourceMetadata.name);
if (sourceMetadata.lazy) srcNamespace = callExpression(srcNamespace, []);
for (const localName of sourceMetadata.importsNamespace) {
if (localName === sourceMetadata.name) continue;
statements.push(_template.default.statement`var NAME = SOURCE;`({
NAME: localName,
SOURCE: cloneNode(srcNamespace)
}));
}
if (constantReexports) {
statements.push(...buildReexportsFromMeta(metadata, sourceMetadata, true));
}
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: cloneNode(srcNamespace)
}));
}
if (sourceMetadata.reexportAll) {
const statement = buildNamespaceReexport(metadata, cloneNode(srcNamespace), constantReexports);
statement.loc = sourceMetadata.reexportAll.loc;
statements.push(statement);
}
return statements;
}
const ReexportTemplate = {
constant: _template.default.statement`EXPORTS.EXPORT_NAME = NAMESPACE_IMPORT;`,
constantComputed: _template.default.statement`EXPORTS["EXPORT_NAME"] = NAMESPACE_IMPORT;`,
spec: _template.default.statement`
Object.defineProperty(EXPORTS, "EXPORT_NAME", {
enumerable: true,
get: function() {
return NAMESPACE_IMPORT;
},
});
`
};
const buildReexportsFromMeta = (meta, metadata, constantReexports) => {
const namespace = metadata.lazy ? callExpression(identifier(metadata.name), []) : identifier(metadata.name);
const {
stringSpecifiers
} = meta;
return Array.from(metadata.reexports, ([exportName, importName]) => {
let NAMESPACE_IMPORT = cloneNode(namespace);
if (importName === "default" && metadata.interop === "node-default") {} else if (stringSpecifiers.has(importName)) {
NAMESPACE_IMPORT = memberExpression(NAMESPACE_IMPORT, stringLiteral(importName), true);
} else {
NAMESPACE_IMPORT = memberExpression(NAMESPACE_IMPORT, identifier(importName));
}
const astNodes = {
EXPORTS: meta.exportName,
EXPORT_NAME: exportName,
NAMESPACE_IMPORT
};
if (constantReexports || isIdentifier(NAMESPACE_IMPORT)) {
if (stringSpecifiers.has(exportName)) {
return ReexportTemplate.constantComputed(astNodes);
} else {
return ReexportTemplate.constant(astNodes);
}
} else {
return ReexportTemplate.spec(astNodes);
}
});
};
function buildESModuleHeader(metadata, enumerableModuleMeta = false) {
return (enumerableModuleMeta ? _template.default.statement`
EXPORTS.__esModule = true;
` : _template.default.statement`
Object.defineProperty(EXPORTS, "__esModule", {
value: true,
});
`)({
EXPORTS: metadata.exportName
});
}
function buildNamespaceReexport(metadata, namespace, constantReexports) {
return (constantReexports ? _template.default.statement`
Object.keys(NAMESPACE).forEach(function(key) {
if (key === "default" || key === "__esModule") return;
VERIFY_NAME_LIST;
if (key in EXPORTS && EXPORTS[key] === NAMESPACE[key]) return;
EXPORTS[key] = NAMESPACE[key];
});
` : _template.default.statement`
Object.keys(NAMESPACE).forEach(function(key) {
if (key === "default" || key === "__esModule") return;
VERIFY_NAME_LIST;
if (key in EXPORTS && EXPORTS[key] === NAMESPACE[key]) return;
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: variableDeclaration("var", [variableDeclarator(name, valueToNode(exportedVars))])
};
}
function buildExportInitializationStatements(programPath, metadata, constantReexports = false, noIncompleteNsImportDetection = false) {
const initStatements = [];
for (const [localName, data] of metadata.local) {
if (data.kind === "import") {} else if (data.kind === "hoisted") {
initStatements.push([data.names[0], buildInitStatement(metadata, data.names, identifier(localName))]);
} else if (!noIncompleteNsImportDetection) {
for (const exportName of data.names) {
initStatements.push([exportName, null]);
}
}
}
for (const data of metadata.source.values()) {
if (!constantReexports) {
const reexportsStatements = buildReexportsFromMeta(metadata, data, false);
const reexports = [...data.reexports.keys()];
for (let i = 0; i < reexportsStatements.length; i++) {
initStatements.push([reexports[i], reexportsStatements[i]]);
}
}
if (!noIncompleteNsImportDetection) {
for (const exportName of data.reexportNamespace) {
initStatements.push([exportName, null]);
}
}
}
initStatements.sort(([a], [b]) => {
if (a < b) return -1;
if (b < a) return 1;
return 0;
});
const results = [];
if (noIncompleteNsImportDetection) {
for (const [, initStatement] of initStatements) {
results.push(initStatement);
}
} else {
const chunkSize = 100;
for (let i = 0; i < initStatements.length; i += chunkSize) {
let uninitializedExportNames = [];
for (let j = 0; j < chunkSize && i + j < initStatements.length; j++) {
const [exportName, initStatement] = initStatements[i + j];
if (initStatement !== null) {
if (uninitializedExportNames.length > 0) {
results.push(buildInitStatement(metadata, uninitializedExportNames, programPath.scope.buildUndefinedNode()));
uninitializedExportNames = [];
}
results.push(initStatement);
} else {
uninitializedExportNames.push(exportName);
}
}
if (uninitializedExportNames.length > 0) {
results.push(buildInitStatement(metadata, uninitializedExportNames, programPath.scope.buildUndefinedNode()));
}
}
}
return results;
}
const InitTemplate = {
computed: _template.default.expression`EXPORTS["NAME"] = VALUE`,
default: _template.default.expression`EXPORTS.NAME = VALUE`
};
function buildInitStatement(metadata, exportNames, initExpr) {
const {
stringSpecifiers,
exportName: EXPORTS
} = metadata;
return expressionStatement(exportNames.reduce((acc, exportName) => {
const params = {
EXPORTS,
NAME: exportName,
VALUE: acc
};
if (stringSpecifiers.has(exportName)) {
return InitTemplate.computed(params);
} else {
return InitTemplate.default(params);
}
}, initExpr));
}
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