function generateMetadata()

in build/releaseMetadata.js [115:199]
73 lines of code
8 McCabe index (conditional complexity)

function generateMetadata() {
	return Promise.all([getBasicLanguages(), getAdvancedLanguages()]).then(
		([basicLanguages, advancedLanguages]) => {
			basicLanguages.sort(strcmp);
			advancedLanguages.sort(strcmp);

			let i = 0,
				len = basicLanguages.length;
			let j = 0,
				lenJ = advancedLanguages.length;
			let languages = [];
			while (i < len || j < lenJ) {
				if (i < len && j < lenJ) {
					if (basicLanguages[i].label === advancedLanguages[j].label) {
						let entry = [];
						entry.push(basicLanguages[i].entry);
						entry.push(advancedLanguages[j].entry);
						languages.push({
							label: basicLanguages[i].label,
							entry: entry,
							worker: advancedLanguages[j].worker
						});
						i++;
						j++;
					} else if (basicLanguages[i].label < advancedLanguages[j].label) {
						languages.push(basicLanguages[i]);
						i++;
					} else {
						languages.push(advancedLanguages[j]);
						j++;
					}
				} else if (i < len) {
					languages.push(basicLanguages[i]);
					i++;
				} else {
					languages.push(advancedLanguages[j]);
					j++;
				}
			}

			const features = getFeatures();

			const dtsContents = `
/*!----------------------------------------------------------------
 * Copyright (c) Microsoft Corporation. All rights reserved.
 * Released under the MIT license
 * https://github.com/microsoft/monaco-editor/blob/main/LICENSE.txt
 *----------------------------------------------------------------*/

export interface IWorkerDefinition {
	id: string;
	entry: string;
}

export interface IFeatureDefinition {
	label: string;
	entry: string | string[] | undefined;
	worker?: IWorkerDefinition;
}

export const features: IFeatureDefinition[];

export const languages: IFeatureDefinition[];

export type EditorLanguage = ${languages.map((el) => `'${el.label}'`).join(' | ')};

export type EditorFeature = ${features.map((el) => `'${el.label}'`).join(' | ')};

export type NegatedEditorFeature = ${features.map((el) => `'!${el.label}'`).join(' | ')};

`;
			const dtsDestination = path.join(REPO_ROOT, 'release/esm/metadata.d.ts');
			ensureDir(path.dirname(dtsDestination));
			fs.writeFileSync(dtsDestination, dtsContents.replace(/\r\n/g, '\n'));

			const jsContents = `
exports.features = ${JSON.stringify(features, null, '  ')};
exports.languages = ${JSON.stringify(languages, null, '  ')};
`;
			const jsDestination = path.join(REPO_ROOT, 'release/esm/metadata.js');
			ensureDir(path.dirname(jsDestination));
			fs.writeFileSync(jsDestination, jsContents.replace(/\r\n/g, '\n'));
		}
	);
}