Function collectExternalModuleReferences

test/fixtures/snapshot/typescript.js:117971–118088

(file)

            return externalHelpersModuleReference;
        }
        function collectExternalModuleReferences(file) {
            if (file.imports) {
                return;
            }
            var isJavaScriptFile = ts.isSourceFileJS(file);
            var isExternalModuleFile = ts.isExternalModule(file);
            // file.imports may not be undefined if there exists dynamic import
            var imports;
            var moduleAugmentations;
            var ambientModules;
            // If we are importing helpers, we need to add a synthetic reference to resolve the
            // helpers library.
            if ((options.isolatedModules || isExternalModuleFile)
                && !file.isDeclarationFile) {
                if (options.importHelpers) {
                    // synthesize 'import "tslib"' declaration
                    imports = [createSyntheticImport(ts.externalHelpersModuleNameText, file)];
                }
                var jsxImport = ts.getJSXRuntimeImport(ts.getJSXImplicitImportBase(options, file), options);
                if (jsxImport) {
                    // synthesize `import "base/jsx-runtime"` declaration
                    (imports || (imports = [])).push(createSyntheticImport(jsxImport, file));
                }
            }
            for (var _i = 0, _a = file.statements; _i < _a.length; _i++) {
                var node = _a[_i];
                collectModuleReferences(node, /*inAmbientModule*/ false);
            }
            if ((file.flags & 2097152 /* NodeFlags.PossiblyContainsDynamicImport */) || isJavaScriptFile) {
                collectDynamicImportOrRequireCalls(file);
            }
            file.imports = imports || ts.emptyArray;
            file.moduleAugmentations = moduleAugmentations || ts.emptyArray;
            file.ambientModuleNames = ambientModules || ts.emptyArray;
            return;
            function collectModuleReferences(node, inAmbientModule) {
                if (ts.isAnyImportOrReExport(node)) {
                    var moduleNameExpr = ts.getExternalModuleName(node);
                    // TypeScript 1.0 spec (April 2014): 12.1.6
                    // An ExternalImportDeclaration in an AmbientExternalModuleDeclaration may reference other external modules
                    // only through top - level external module names. Relative external module names are not permitted.
                    if (moduleNameExpr && ts.isStringLiteral(moduleNameExpr) && moduleNameExpr.text && (!inAmbientModule || !ts.isExternalModuleNameRelative(moduleNameExpr.text))) {
                        ts.setParentRecursive(node, /*incremental*/ false); // we need parent data on imports before the program is fully bound, so we ensure it's set here
                        imports = ts.append(imports, moduleNameExpr);
                        if (!usesUriStyleNodeCoreModules && currentNodeModulesDepth === 0 && !file.isDeclarationFile) {
                            usesUriStyleNodeCoreModules = ts.startsWith(moduleNameExpr.text, "node:");
                        }
                    }
                }
                else if (ts.isModuleDeclaration(node)) {
                    if (ts.isAmbientModule(node) && (inAmbientModule || ts.hasSyntacticModifier(node, 2 /* ModifierFlags.Ambient */) || file.isDeclarationFile)) {
                        node.name.parent = node;
                        var nameText = ts.getTextOfIdentifierOrLiteral(node.name);
                        // Ambient module declarations can be interpreted as augmentations for some existing external modules.
                        // This will happen in two cases:
                        // - if current file is external module then module augmentation is a ambient module declaration defined in the top level scope
                        // - if current file is not external module then module augmentation is an ambient module declaration with non-relative module name
                        //   immediately nested in top level ambient module declaration .