How to use the tsickle.TsickleCompilerHost function in tsickle

if (ngOptions_1.flatModuleOutFile && !ngOptions_1.skipMetadataEmit) {
            var _b = createBundleIndexHost(ngOptions_1, rootFileNames_1, host_1), bundleHost = _b.host, indexName = _b.indexName, errors_1 = _b.errors;
            if (errors_1)
                tsc_1.check(errors_1);
            if (indexName)
                addGeneratedFileName_1(indexName);
            host_1 = bundleHost;
        }
        var tsickleCompilerHostOptions = { googmodule: false, untyped: true, convertIndexImportShorthand: false };
        var tsickleHost = {
            shouldSkipTsickleProcessing: function (fileName) { return /\.d\.ts$/.test(fileName); },
            pathToModuleName: function (context, importPath) { return ''; },
            shouldIgnoreWarningsForPath: function (filePath) { return false; },
            fileNameToModuleId: function (fileName) { return fileName; },
        };
        var tsickleCompilerHost_1 = new tsickle.TsickleCompilerHost(host_1, ngOptions_1, tsickleCompilerHostOptions, tsickleHost);
        var program_1 = createProgram_1(tsickleCompilerHost_1);
        var errors = program_1.getOptionsDiagnostics();
        tsc_1.check(errors);
        if (ngOptions_1.skipTemplateCodegen || !codegen) {
            codegen = function () { return Promise.resolve([]); };
        }
        if (diagnostics_1)
            console.time('NG codegen');
        return codegen(ngOptions_1, cliOptions, program_1, host_1).then(function (genFiles) {
            if (diagnostics_1)
                console.timeEnd('NG codegen');
            // Add the generated files to the configuration so they will become part of the program.
            if (ngOptions_1.alwaysCompileGeneratedCode) {
                genFiles.forEach(function (genFileName) { return addGeneratedFileName_1(genFileName); });
            }
            var definitionsHost = tsickleCompilerHost_1;

if (ngOptions_1.flatModuleOutFile && !ngOptions_1.skipMetadataEmit) {
            var _b = createBundleIndexHost(ngOptions_1, rootFileNames_1, host_1), bundleHost = _b.host, indexName = _b.indexName, errors_1 = _b.errors;
            if (errors_1)
                tsc_1.check(errors_1);
            if (indexName)
                addGeneratedFileName_1(indexName);
            host_1 = bundleHost;
        }
        var tsickleCompilerHostOptions = { googmodule: false, untyped: true, convertIndexImportShorthand: true };
        var tsickleHost = {
            shouldSkipTsickleProcessing: function (fileName) { return /\.d\.ts$/.test(fileName); },
            pathToModuleName: function (context, importPath) { return ''; },
            shouldIgnoreWarningsForPath: function (filePath) { return false; },
            fileNameToModuleId: function (fileName) { return fileName; },
        };
        var tsickleCompilerHost_1 = new tsickle.TsickleCompilerHost(host_1, ngOptions_1, tsickleCompilerHostOptions, tsickleHost);
        var program_1 = createProgram_1(tsickleCompilerHost_1);
        var errors = program_1.getOptionsDiagnostics();
        tsc_1.check(errors);
        if (ngOptions_1.skipTemplateCodegen || !codegen) {
            codegen = function () { return Promise.resolve([]); };
        }
        if (diagnostics_1)
            console.time('NG codegen');
        return codegen(ngOptions_1, cliOptions, program_1, host_1).then(function (genFiles) {
            if (diagnostics_1)
                console.timeEnd('NG codegen');
            // Add the generated files to the configuration so they will become part of the program.
            if (ngOptions_1.alwaysCompileGeneratedCode) {
                genFiles.forEach(function (genFileName) { return addGeneratedFileName_1(genFileName); });
            }
            var definitionsHost = tsickleCompilerHost_1;

console.timeEnd('NG flat module index');
            var metadata = JSON.stringify(metadataBundle.metadata);
            var name_1 = path.join(path.dirname(indexModule), ngOptions_1.flatModuleOutFile.replace(JS_EXT, '.ts'));
            var libraryIndex = "./" + path.basename(indexModule);
            var content = index_writer_1.privateEntriesToIndex(libraryIndex, metadataBundle.privates);
            host_1 = new compiler_host_1.SyntheticIndexHost(host_1, { name: name_1, content: content, metadata: metadata });
            addGeneratedFileName_1(name_1);
        }
        var tsickleCompilerHostOptions = { googmodule: false, untyped: true, convertIndexImportShorthand: true };
        var tsickleHost = {
            shouldSkipTsickleProcessing: function (fileName) { return /\.d\.ts$/.test(fileName); },
            pathToModuleName: function (context, importPath) { return ''; },
            shouldIgnoreWarningsForPath: function (filePath) { return false; },
            fileNameToModuleId: function (fileName) { return fileName; },
        };
        var tsickleCompilerHost_1 = new tsickle.TsickleCompilerHost(host_1, ngOptions_1, tsickleCompilerHostOptions, tsickleHost);
        var program_1 = createProgram_1(tsickleCompilerHost_1);
        var errors = program_1.getOptionsDiagnostics();
        tsc_1.check(errors);
        if (ngOptions_1.skipTemplateCodegen || !codegen) {
            codegen = function () { return Promise.resolve([]); };
        }
        if (diagnostics_1)
            console.time('NG codegen');
        return codegen(ngOptions_1, cliOptions, program_1, host_1).then(function (genFiles) {
            if (diagnostics_1)
                console.timeEnd('NG codegen');
            // Add the generated files to the configuration so they will become part of the program.
            if (ngOptions_1.alwaysCompileGeneratedCode) {
                genFiles.forEach(function (genFileName) { return addGeneratedFileName_1(genFileName); });
            }
            var definitionsHost = tsickleCompilerHost_1;

var content = index_writer_1.privateEntriesToIndex(libraryIndex, metadataBundle.privates);
            host_1 = new compiler_host_1.SyntheticIndexHost(host_1, { name: name_1, content: content, metadata: metadata });
            parsed_1.fileNames.push(name_1);
        }
        var tsickleCompilerHostOptions = {
            googmodule: false,
            untyped: true,
            convertIndexImportShorthand: ngOptions_1.target === ts.ScriptTarget.ES2015,
        };
        var tsickleHost = {
            shouldSkipTsickleProcessing: function (fileName) { return /\.d\.ts$/.test(fileName); },
            pathToModuleName: function (context, importPath) { return ''; },
            shouldIgnoreWarningsForPath: function (filePath) { return false; },
            fileNameToModuleId: function (fileName) { return fileName; },
        };
        var tsickleCompilerHost_1 = new tsickle.TsickleCompilerHost(host_1, ngOptions_1, tsickleCompilerHostOptions, tsickleHost);
        var program_1 = createProgram_1(tsickleCompilerHost_1);
        var errors = program_1.getOptionsDiagnostics();
        tsc_1.check(errors);
        if (ngOptions_1.skipTemplateCodegen || !codegen) {
            codegen = function () { return Promise.resolve(null); };
        }
        if (diagnostics_1)
            console.time('NG codegen');
        return codegen(ngOptions_1, cliOptions, program_1, host_1).then(function () {
            if (diagnostics_1)
                console.timeEnd('NG codegen');
            var definitionsHost = tsickleCompilerHost_1;
            if (!ngOptions_1.skipMetadataEmit) {
                // if tsickle is not not used for emitting, but we do use the MetadataWriterHost,
                // it also needs to emit the js files.
                var emitJsFiles = ngOptions_1.annotationsAs === 'decorators' && !ngOptions_1.annotateForClosureCompiler;