src/vs/workbench/contrib/tasks/common/taskConfiguration.ts/fromString
	export function fromString(value: string | undefined): Tasks.RunOnOptions {
		if (!value) {
			return Tasks.RunOnOptions.default;
		}
		switch (value.toLowerCase()) {
			case 'folderopen':
				return Tasks.RunOnOptions.folderOpen;
			case 'default':
			default:
				return Tasks.RunOnOptions.default;
		}
	}