Function openExistingFileTab

src/utils/fileOpening.ts:258–286

(
	app: App,
	file: TFile,
	focus = true,
)

 * Returns the leaf if found, otherwise `null`.
 */
export function openExistingFileTab(
	app: App,
	file: TFile,
	focus = true,
): WorkspaceLeaf | null {
	let leaf: WorkspaceLeaf | undefined = undefined;

	app.workspace.iterateRootLeaves((m_leaf: WorkspaceLeaf) => {
		const view = m_leaf.view;
		if (view instanceof FileView) {
			if (view.file) {
				if (
					view.file === file ||
					areSameVaultFilePath(file.path, view.file.path)
				) {
					leaf = m_leaf;
					return;
				}
			}
		}
	});
	if (leaf !== undefined) {
		if (focus) {
			app.workspace.setActiveLeaf(leaf, { focus: true });
		}
		return leaf;
	}
	return null;
}