src/vs/platform/environment/common/environmentService.ts/AbstractNativeEnvironmentService/disableExtensions
class AbstractNativeEnvironmentService:	get disableExtensions(): boolean | string[] {
		if (this.args['disable-extensions']) {
			return true;
		}

		const disableExtensions = this.args['disable-extension'];
		if (disableExtensions) {
			if (typeof disableExtensions === 'string') {
				return [disableExtensions];
			}

			if (Array.isArray(disableExtensions) && disableExtensions.length > 0) {
				return disableExtensions;
			}
		}

		return false;
	}