Function fileExistsIfProjectReferenceDts

test/fixtures/snapshot/typescript.js:119328–119333

(file)

            return fileOrDirectoryExistsUsingSource(file, /*isFile*/ true);
        }
        function fileExistsIfProjectReferenceDts(file) {
            var source = host.getSourceOfProjectReferenceRedirect(host.toPath(file));
            return source !== undefined ?
                ts.isString(source) ? originalFileExists.call(host.compilerHost, source) : true :
                undefined;
        }
        function directoryExistsIfProjectReferenceDeclDir(dir) {
            var dirPath = host.toPath(dir);
            var dirPathWithTrailingDirectorySeparator = "".concat(dirPath).concat(ts.directorySeparator);