| 1 | "use strict";
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| 2 |
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| 3 | Object.defineProperty(exports, "__esModule", {
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| 4 | value: true
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| 5 | });
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| 6 | exports.default = normalizeModuleAndLoadMetadata;
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| 7 | exports.hasExports = hasExports;
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| 8 | exports.isSideEffectImport = isSideEffectImport;
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| 9 | exports.validateImportInteropOption = validateImportInteropOption;
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| 10 | var _path = require("path");
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| 11 | var _helperValidatorIdentifier = require("@babel/helper-validator-identifier");
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| 12 | function hasExports(metadata) {
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| 13 | return metadata.hasExports;
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| 14 | }
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| 15 | function isSideEffectImport(source) {
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| 16 | return source.imports.size === 0 && source.importsNamespace.size === 0 && source.reexports.size === 0 && source.reexportNamespace.size === 0 && !source.reexportAll;
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| 17 | }
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| 18 | function validateImportInteropOption(importInterop) {
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| 19 | if (typeof importInterop !== "function" && importInterop !== "none" && importInterop !== "babel" && importInterop !== "node") {
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| 20 | throw new Error(`.importInterop must be one of "none", "babel", "node", or a function returning one of those values (received ${importInterop}).`);
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| 21 | }
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| 22 | return importInterop;
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| 23 | }
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| 24 | function resolveImportInterop(importInterop, source, filename) {
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| 25 | if (typeof importInterop === "function") {
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| 26 | return validateImportInteropOption(importInterop(source, filename));
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| 27 | }
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| 28 | return importInterop;
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| 29 | }
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| 30 | function normalizeModuleAndLoadMetadata(programPath, exportName, {
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| 31 | importInterop,
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| 32 | initializeReexports = false,
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| 33 | getWrapperPayload,
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| 34 | esNamespaceOnly = false,
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| 35 | filename
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| 36 | }) {
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| 37 | if (!exportName) {
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| 38 | exportName = programPath.scope.generateUidIdentifier("exports").name;
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| 39 | }
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| 40 | const stringSpecifiers = new Set();
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| 41 | nameAnonymousExports(programPath);
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| 42 | const {
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| 43 | local,
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| 44 | sources,
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| 45 | hasExports
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| 46 | } = getModuleMetadata(programPath, {
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| 47 | initializeReexports,
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| 48 | getWrapperPayload
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| 49 | }, stringSpecifiers);
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| 50 | removeImportExportDeclarations(programPath);
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| 51 | for (const [source, metadata] of sources) {
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| 52 | const {
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| 53 | importsNamespace,
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| 54 | imports
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| 55 | } = metadata;
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| 56 | if (importsNamespace.size > 0 && imports.size === 0) {
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| 57 | const [nameOfnamespace] = importsNamespace;
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| 58 | metadata.name = nameOfnamespace;
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| 59 | }
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| 60 | const resolvedInterop = resolveImportInterop(importInterop, source, filename);
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| 61 | if (resolvedInterop === "none") {
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| 62 | metadata.interop = "none";
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| 63 | } else if (resolvedInterop === "node" && metadata.interop === "namespace") {
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| 64 | metadata.interop = "node-namespace";
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| 65 | } else if (resolvedInterop === "node" && metadata.interop === "default") {
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| 66 | metadata.interop = "node-default";
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| 67 | } else if (esNamespaceOnly && metadata.interop === "namespace") {
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| 68 | metadata.interop = "default";
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| 69 | }
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| 70 | }
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| 71 | return {
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| 72 | exportName,
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| 73 | exportNameListName: null,
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| 74 | hasExports,
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| 75 | local,
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| 76 | source: sources,
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| 77 | stringSpecifiers
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| 78 | };
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| 79 | }
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| 80 | function getExportSpecifierName(path, stringSpecifiers) {
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| 81 | if (path.isIdentifier()) {
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| 82 | return path.node.name;
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| 83 | } else if (path.isStringLiteral()) {
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| 84 | const stringValue = path.node.value;
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| 85 | if (!(0, _helperValidatorIdentifier.isIdentifierName)(stringValue)) {
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| 86 | stringSpecifiers.add(stringValue);
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| 87 | }
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| 88 | return stringValue;
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| 89 | } else {
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| 90 | throw new Error(`Expected export specifier to be either Identifier or StringLiteral, got ${path.node.type}`);
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| 91 | }
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| 92 | }
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| 93 | function assertExportSpecifier(path) {
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| 94 | if (path.isExportSpecifier()) {
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| 95 | return;
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| 96 | } else if (path.isExportNamespaceSpecifier()) {
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| 97 | throw path.buildCodeFrameError("Export namespace should be first transformed by `@babel/plugin-transform-export-namespace-from`.");
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| 98 | } else {
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| 99 | throw path.buildCodeFrameError("Unexpected export specifier type");
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| 100 | }
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| 101 | }
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| 102 | function getModuleMetadata(programPath, {
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| 103 | getWrapperPayload,
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| 104 | initializeReexports
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| 105 | }, stringSpecifiers) {
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| 106 | const localData = getLocalExportMetadata(programPath, initializeReexports, stringSpecifiers);
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| 107 | const importNodes = new Map();
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| 108 | const sourceData = new Map();
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| 109 | const getData = (sourceNode, node) => {
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| 110 | const source = sourceNode.value;
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| 111 | let data = sourceData.get(source);
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| 112 | if (!data) {
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| 113 | data = {
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| 114 | name: programPath.scope.generateUidIdentifier((0, _path.basename)(source, (0, _path.extname)(source))).name,
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| 115 | interop: "none",
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| 116 | loc: null,
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| 117 | imports: new Map(),
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| 118 | importsNamespace: new Set(),
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| 119 | reexports: new Map(),
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| 120 | reexportNamespace: new Set(),
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| 121 | reexportAll: null,
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| 122 | wrap: null,
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| 123 | get lazy() {
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| 124 | return this.wrap === "lazy";
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| 125 | },
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| 126 | referenced: false
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| 127 | };
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| 128 | sourceData.set(source, data);
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| 129 | importNodes.set(source, [node]);
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| 130 | } else {
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| 131 | importNodes.get(source).push(node);
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| 132 | }
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| 133 | return data;
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| 134 | };
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| 135 | let hasExports = false;
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| 136 | programPath.get("body").forEach(child => {
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| 137 | if (child.isImportDeclaration()) {
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| 138 | const data = getData(child.node.source, child.node);
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| 139 | if (!data.loc) data.loc = child.node.loc;
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| 140 | child.get("specifiers").forEach(spec => {
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| 141 | if (spec.isImportDefaultSpecifier()) {
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| 142 | const localName = spec.get("local").node.name;
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| 143 | data.imports.set(localName, "default");
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| 144 | const reexport = localData.get(localName);
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| 145 | if (reexport) {
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| 146 | localData.delete(localName);
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| 147 | reexport.names.forEach(name => {
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| 148 | data.reexports.set(name, "default");
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| 149 | });
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| 150 | data.referenced = true;
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| 151 | }
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| 152 | } else if (spec.isImportNamespaceSpecifier()) {
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| 153 | const localName = spec.get("local").node.name;
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| 154 | data.importsNamespace.add(localName);
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| 155 | const reexport = localData.get(localName);
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| 156 | if (reexport) {
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| 157 | localData.delete(localName);
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| 158 | reexport.names.forEach(name => {
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| 159 | data.reexportNamespace.add(name);
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| 160 | });
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| 161 | data.referenced = true;
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| 162 | }
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| 163 | } else if (spec.isImportSpecifier()) {
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| 164 | const importName = getExportSpecifierName(spec.get("imported"), stringSpecifiers);
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| 165 | const localName = spec.get("local").node.name;
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| 166 | data.imports.set(localName, importName);
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| 167 | const reexport = localData.get(localName);
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| 168 | if (reexport) {
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| 169 | localData.delete(localName);
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| 170 | reexport.names.forEach(name => {
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| 171 | data.reexports.set(name, importName);
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| 172 | });
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| 173 | data.referenced = true;
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| 174 | }
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| 175 | }
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| 176 | });
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| 177 | } else if (child.isExportAllDeclaration()) {
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| 178 | hasExports = true;
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| 179 | const data = getData(child.node.source, child.node);
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| 180 | if (!data.loc) data.loc = child.node.loc;
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| 181 | data.reexportAll = {
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| 182 | loc: child.node.loc
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| 183 | };
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| 184 | data.referenced = true;
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| 185 | } else if (child.isExportNamedDeclaration() && child.node.source) {
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| 186 | hasExports = true;
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| 187 | const data = getData(child.node.source, child.node);
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| 188 | if (!data.loc) data.loc = child.node.loc;
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| 189 | child.get("specifiers").forEach(spec => {
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| 190 | assertExportSpecifier(spec);
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| 191 | const importName = getExportSpecifierName(spec.get("local"), stringSpecifiers);
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| 192 | const exportName = getExportSpecifierName(spec.get("exported"), stringSpecifiers);
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| 193 | data.reexports.set(exportName, importName);
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| 194 | data.referenced = true;
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| 195 | if (exportName === "__esModule") {
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| 196 | throw spec.get("exported").buildCodeFrameError('Illegal export "__esModule".');
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| 197 | }
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| 198 | });
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| 199 | } else if (child.isExportNamedDeclaration() || child.isExportDefaultDeclaration()) {
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| 200 | hasExports = true;
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| 201 | }
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| 202 | });
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| 203 | for (const metadata of sourceData.values()) {
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| 204 | let needsDefault = false;
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| 205 | let needsNamed = false;
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| 206 | if (metadata.importsNamespace.size > 0) {
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| 207 | needsDefault = true;
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| 208 | needsNamed = true;
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| 209 | }
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| 210 | if (metadata.reexportAll) {
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| 211 | needsNamed = true;
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| 212 | }
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| 213 | for (const importName of metadata.imports.values()) {
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| 214 | if (importName === "default") needsDefault = true;else needsNamed = true;
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| 215 | }
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| 216 | for (const importName of metadata.reexports.values()) {
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| 217 | if (importName === "default") needsDefault = true;else needsNamed = true;
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| 218 | }
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| 219 | if (needsDefault && needsNamed) {
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| 220 | metadata.interop = "namespace";
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| 221 | } else if (needsDefault) {
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| 222 | metadata.interop = "default";
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| 223 | }
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| 224 | }
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| 225 | if (getWrapperPayload) {
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| 226 | for (const [source, metadata] of sourceData) {
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| 227 | metadata.wrap = getWrapperPayload(source, metadata, importNodes.get(source));
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| 228 | }
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| 229 | }
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| 230 | return {
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| 231 | hasExports,
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| 232 | local: localData,
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| 233 | sources: sourceData
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| 234 | };
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| 235 | }
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| 236 | function getLocalExportMetadata(programPath, initializeReexports, stringSpecifiers) {
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| 237 | const bindingKindLookup = new Map();
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| 238 | programPath.get("body").forEach(child => {
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| 239 | let kind;
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| 240 | if (child.isImportDeclaration()) {
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| 241 | kind = "import";
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| 242 | } else {
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| 243 | if (child.isExportDefaultDeclaration()) {
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| 244 | child = child.get("declaration");
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| 245 | }
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| 246 | if (child.isExportNamedDeclaration()) {
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| 247 | if (child.node.declaration) {
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| 248 | child = child.get("declaration");
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| 249 | } else if (initializeReexports && child.node.source && child.get("source").isStringLiteral()) {
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| 250 | child.get("specifiers").forEach(spec => {
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| 251 | assertExportSpecifier(spec);
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| 252 | bindingKindLookup.set(spec.get("local").node.name, "block");
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| 253 | });
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| 254 | return;
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| 255 | }
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| 256 | }
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| 257 | if (child.isFunctionDeclaration()) {
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| 258 | kind = "hoisted";
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| 259 | } else if (child.isClassDeclaration()) {
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| 260 | kind = "block";
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| 261 | } else if (child.isVariableDeclaration({
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| 262 | kind: "var"
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| 263 | })) {
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| 264 | kind = "var";
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| 265 | } else if (child.isVariableDeclaration()) {
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| 266 | kind = "block";
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| 267 | } else {
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| 268 | return;
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| 269 | }
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| 270 | }
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| 271 | Object.keys(child.getOuterBindingIdentifiers()).forEach(name => {
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| 272 | bindingKindLookup.set(name, kind);
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| 273 | });
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| 274 | });
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| 275 | const localMetadata = new Map();
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| 276 | const getLocalMetadata = idPath => {
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| 277 | const localName = idPath.node.name;
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| 278 | let metadata = localMetadata.get(localName);
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| 279 | if (!metadata) {
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| 280 | const kind = bindingKindLookup.get(localName);
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| 281 | if (kind === undefined) {
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| 282 | throw idPath.buildCodeFrameError(`Exporting local "${localName}", which is not declared.`);
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| 283 | }
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| 284 | metadata = {
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| 285 | names: [],
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| 286 | kind
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| 287 | };
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| 288 | localMetadata.set(localName, metadata);
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| 289 | }
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| 290 | return metadata;
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| 291 | };
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| 292 | programPath.get("body").forEach(child => {
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| 293 | if (child.isExportNamedDeclaration() && (initializeReexports || !child.node.source)) {
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| 294 | if (child.node.declaration) {
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| 295 | const declaration = child.get("declaration");
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| 296 | const ids = declaration.getOuterBindingIdentifierPaths();
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| 297 | Object.keys(ids).forEach(name => {
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| 298 | if (name === "__esModule") {
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| 299 | throw declaration.buildCodeFrameError('Illegal export "__esModule".');
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| 300 | }
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| 301 | getLocalMetadata(ids[name]).names.push(name);
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| 302 | });
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| 303 | } else {
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| 304 | child.get("specifiers").forEach(spec => {
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| 305 | const local = spec.get("local");
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| 306 | const exported = spec.get("exported");
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| 307 | const localMetadata = getLocalMetadata(local);
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| 308 | const exportName = getExportSpecifierName(exported, stringSpecifiers);
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| 309 | if (exportName === "__esModule") {
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| 310 | throw exported.buildCodeFrameError('Illegal export "__esModule".');
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| 311 | }
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| 312 | localMetadata.names.push(exportName);
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| 313 | });
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| 314 | }
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| 315 | } else if (child.isExportDefaultDeclaration()) {
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| 316 | const declaration = child.get("declaration");
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| 317 | if (declaration.isFunctionDeclaration() || declaration.isClassDeclaration()) {
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| 318 | getLocalMetadata(declaration.get("id")).names.push("default");
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| 319 | } else {
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| 320 | throw declaration.buildCodeFrameError("Unexpected default expression export.");
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| 321 | }
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| 322 | }
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| 323 | });
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| 324 | return localMetadata;
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| 325 | }
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| 326 | function nameAnonymousExports(programPath) {
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| 327 | programPath.get("body").forEach(child => {
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| 328 | if (!child.isExportDefaultDeclaration()) return;
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| 329 | {
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| 330 | var _child$splitExportDec;
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| 331 | (_child$splitExportDec = child.splitExportDeclaration) != null ? _child$splitExportDec : child.splitExportDeclaration = require("@babel/traverse").NodePath.prototype.splitExportDeclaration;
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| 332 | }
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| 333 | child.splitExportDeclaration();
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| 334 | });
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| 335 | }
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| 336 | function removeImportExportDeclarations(programPath) {
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| 337 | programPath.get("body").forEach(child => {
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| 338 | if (child.isImportDeclaration()) {
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| 339 | child.remove();
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| 340 | } else if (child.isExportNamedDeclaration()) {
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| 341 | if (child.node.declaration) {
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| 342 | child.node.declaration._blockHoist = child.node._blockHoist;
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| 343 | child.replaceWith(child.node.declaration);
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| 344 | } else {
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| 345 | child.remove();
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| 346 | }
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| 347 | } else if (child.isExportDefaultDeclaration()) {
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| 348 | const declaration = child.get("declaration");
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| 349 | if (declaration.isFunctionDeclaration() || declaration.isClassDeclaration()) {
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| 350 | declaration._blockHoist = child.node._blockHoist;
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| 351 | child.replaceWith(declaration);
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| 352 | } else {
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| 353 | throw declaration.buildCodeFrameError("Unexpected default expression export.");
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| 354 | }
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| 355 | } else if (child.isExportAllDeclaration()) {
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| 356 | child.remove();
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| 357 | }
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| 358 | });
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| 359 | }
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| 360 |
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| 361 | //# sourceMappingURL=normalize-and-load-metadata.js.map
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