diff --git a/src/fileUtils.ts b/src/fileUtils.ts
index e4fbb20..b9d0cac 100644
--- a/src/fileUtils.ts
+++ b/src/fileUtils.ts
@@ -1,19 +1,25 @@
 import { Editor } from "codemirror";
-import { App, MarkdownView, TFile } from "obsidian";
+import { App, MarkdownView, TFile, WorkspaceLeaf } from "obsidian";
 
 type MarkdownEditor = Editor & {
   replaceRange: Editor["replaceRange"];
 };
 
+type MarkdownViewWithEditor = MarkdownView & {
+  editor?: MarkdownEditor;
+  sourceMode?: { cmEditor?: MarkdownEditor };
+};
+
+function isMarkdownViewWithEditor(view: unknown): view is MarkdownViewWithEditor {
+  return view instanceof MarkdownView;
+}
+
 export function getEditorForFile(app: App, file: TFile): MarkdownEditor | null {
-  let editor = null;
-  app.workspace.iterateAllLeaves((leaf) => {
-    if (leaf.view instanceof MarkdownView && leaf.view.file === file) {
-      const view = leaf.view as MarkdownView & {
-        editor?: MarkdownEditor;
-        sourceMode?: { cmEditor?: MarkdownEditor };
-      };
-      editor = view.editor || view.sourceMode?.cmEditor;
+  let editor: MarkdownEditor | null = null;
+  app.workspace.iterateAllLeaves((leaf: WorkspaceLeaf) => {
+    const { view } = leaf;
+    if (isMarkdownViewWithEditor(view) && view.file === file) {
+      editor = view.editor ?? view.sourceMode?.cmEditor ?? null;
     }
   });
   return editor;
diff --git a/src/modal.ts b/src/modal.ts
index b9f05e6..41a9c81 100644
--- a/src/modal.ts
+++ b/src/modal.ts
@@ -2,15 +2,15 @@ import { App, Modal } from "obsidian";
 
 interface IConfirmationDialogParams {
   cta: string;
-  onAccept: (...args: unknown[]) => Promise<void>;
-  onCancel?: (...args: unknown[]) => void;
+  onAccept: () => Promise<void>;
+  onCancel?: () => void;
   text: string;
   title: string;
 }
 
 export class ConfirmationModal extends Modal {
   private config: IConfirmationDialogParams;
-  private accepted: boolean;
+  private accepted = false;
   private buttonContainerEl: HTMLElement;
 
   constructor(app: App, config: IConfirmationDialogParams) {
@@ -19,28 +19,30 @@ export class ConfirmationModal extends Modal {
 
     const { cta, onAccept, text, title } = config;
 
-		this.containerEl.addClass('mod-confirmation');
+    this.containerEl.addClass("mod-confirmation");
     this.titleEl.setText(title);
     this.contentEl.setText(text);
 
-		this.buttonContainerEl = this.modalEl.createDiv('modal-button-container');
+    this.buttonContainerEl = this.modalEl.createDiv("modal-button-container");
 
     const acceptBtnEl = this.buttonContainerEl.createEl("button", {
       cls: "mod-cta",
       text: cta,
     });
-    acceptBtnEl.addEventListener("click", async (e) => {
-      e.preventDefault();
+    acceptBtnEl.addEventListener("click", (event: MouseEvent) => {
+      event.preventDefault();
       this.accepted = true;
       this.close();
-      onAccept(e);
+      void onAccept();
     });
 
-    const cancelBtnEl = this.buttonContainerEl.createEl("button", { text: "Never mind" });
-    cancelBtnEl.addEventListener("click", e => {
-        e.preventDefault();
-        this.close();
-      });
+    const cancelBtnEl = this.buttonContainerEl.createEl("button", {
+      text: "Never mind",
+    });
+    cancelBtnEl.addEventListener("click", (event: MouseEvent) => {
+      event.preventDefault();
+      this.close();
+    });
   }
 
   onClose(): void {
diff --git a/src/moment.ts b/src/moment.ts
new file mode 100644
index 0000000..76c6760
--- /dev/null
+++ b/src/moment.ts
@@ -0,0 +1,35 @@
+export interface MomentLike {
+  unix(): number;
+  startOf(unit: string): MomentLike;
+  endOf(unit: string): MomentLike;
+  format(pattern?: string): string;
+  diff(input: string | MomentLike, unit?: string): number;
+  clone(): MomentLike;
+  subtract(amount: number, unit: string): MomentLike;
+  add(amount: number, unit: string): MomentLike;
+  isSameOrBefore(input: MomentLike, unit?: string): boolean;
+  isBefore(input: MomentLike, unit?: string): boolean;
+  isAfter(input: MomentLike, unit?: string): boolean;
+  isSame(input: MomentLike, unit?: string): boolean;
+  isoWeek(): number;
+  year(): number;
+  month(): number;
+  date(): number;
+  fromNow(): string;
+}
+
+export interface MomentFactory {
+  (): MomentLike;
+  (input: string, format?: string, strict?: boolean): MomentLike;
+  unix(timestamp: number): MomentLike;
+}
+
+declare global {
+  interface Window {
+    moment: MomentFactory;
+  }
+}
+
+export function getMoment(): MomentFactory {
+  return window.moment;
+}
diff --git a/src/renderer.ts b/src/renderer.ts
index ef91b26..12da884 100644
--- a/src/renderer.ts
+++ b/src/renderer.ts
@@ -3,6 +3,15 @@ import { ISettings } from "./settings";
 import { ISubTask, ITask } from "./things";
 import { getHeadingLevel, getTab, groupBy, toHeading } from "./textUtils";
 
+interface VaultConfigReader {
+  getConfig(key: "useTab"): boolean;
+  getConfig(key: "tabSize"): number;
+}
+
+function getVaultConfig(app: App): VaultConfigReader {
+  return app.vault as unknown as VaultConfigReader;
+}
+
 export class ToolkitRenderer {
   private app: App;
   private settings: ISettings;
@@ -14,31 +23,33 @@ export class ToolkitRenderer {
   }
 
   renderTask(task: ITask): string {
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    const vault = this.app.vault as any;
+    const vault = getVaultConfig(this.app);
     const tab = getTab(vault.getConfig("useTab"), vault.getConfig("tabSize"));
     const prefix = this.settings.tagPrefix;
 
-    const tags = Array.from(new Set(task.tags
-      .filter((tag) => !!tag)
-      .map((tag) => tag.replace(/\s+/g, "-").toLowerCase())
-      .sort()
-    ))
+    const tags = Array.from(
+      new Set(
+        task.tags
+          .filter((tag) => !!tag)
+          .map((tag) => tag.replace(/\s+/g, "-").toLowerCase())
+          .sort()
+      )
+    )
       .map((tag) => `#${prefix}${tag}`)
       .join(" ");
 
-    const taskTitle = `[${task.title}](things:///show?id=${task.uuid}) ${tags}`.trimEnd()
+    const taskTitle = `[${task.title}](things:///show?id=${task.uuid}) ${tags}`.trimEnd();
 
     const notes = this.settings.doesSyncNoteBody
       ? String(task.notes || "")
-        .trimEnd()
-        .split("\n")
-        .filter((line) => !!line)
-        .map((noteLine) => `${tab}${noteLine}`)
-      : ""
+          .trimEnd()
+          .split("\n")
+          .filter((line) => !!line)
+          .map((noteLine) => `${tab}${noteLine}`)
+      : [];
 
     return [
-      `- [${task.cancelled ? this.settings.canceledMark : 'x'}] ${taskTitle}`,
+      `- [${task.cancelled ? this.settings.canceledMark : "x"}] ${taskTitle}`,
       ...notes,
       ...task.subtasks.map(
         (subtask: ISubTask) =>
@@ -51,15 +62,20 @@ export class ToolkitRenderer {
 
   public render(tasks: ITask[]): string {
     const { sectionHeading, doesSyncProject, doesAddNewlineBeforeHeadings } = this.settings;
-    const headings = groupBy<ITask>(tasks, (task) => task.area || (doesSyncProject ? task.project : "") || "");
-    const headingLevel = getHeadingLevel(sectionHeading);
+    const headings = groupBy<ITask>(
+      tasks,
+      (task) => task.area || (doesSyncProject ? task.project : "") || ""
+    );
+    const headingLevel = getHeadingLevel(sectionHeading) ?? 2;
 
     const output = [sectionHeading];
-    Object.entries(headings).map(([heading, tasks]) => {
+    Object.entries(headings).forEach(([heading, groupedTasks]) => {
       if (heading !== "") {
-        output.push(toHeading(heading, headingLevel + 1, doesAddNewlineBeforeHeadings));
+        output.push(
+          toHeading(heading, headingLevel + 1, doesAddNewlineBeforeHeadings)
+        );
       }
-      output.push(...tasks.map(this.renderTask));
+      output.push(...groupedTasks.map(this.renderTask));
     });
 
     return output.join("\n");
diff --git a/src/sqlite.ts b/src/sqlite.ts
index 7ecbb79..2396ee4 100644
--- a/src/sqlite.ts
+++ b/src/sqlite.ts
@@ -6,7 +6,7 @@ export const TASK_FETCH_LIMIT = 1000;
 interface ISpawnResults {
   stdOut: Buffer[];
   stdErr: Buffer[];
-  code: number;
+  code: number | null;
 }
 
 function parseCSV<T>(csv: Buffer[]): T[] {
@@ -47,10 +47,10 @@ async function handleSqliteQuery(
     });
 
     spawned.on("error", (err: Error) => {
-      stdErr.push(Buffer.from(String(err.stack), "ascii"));
+      stdErr.push(Buffer.from(err.stack ?? err.message, "utf-8"));
     });
-    spawned.on("close", (code: number) => finish({ stdErr, stdOut, code }));
-    spawned.on("exit", (code: number) => finish({ stdErr, stdOut, code }));
+    spawned.on("close", (code: number | null) => finish({ stdErr, stdOut, code }));
+    spawned.on("exit", (code: number | null) => finish({ stdErr, stdOut, code }));
   });
 }
 
@@ -58,10 +58,10 @@ export async function querySqliteDB<T>(
   dbPath: string,
   query: string
 ): Promise<T[]> {
-  const { stdOut, stdErr } = await handleSqliteQuery(dbPath, query);
-  if (stdErr.length) {
-    const error = Buffer.concat(stdErr).toString("utf-8");
-    return Promise.reject(error);
+  const { stdOut, stdErr, code } = await handleSqliteQuery(dbPath, query);
+  if (stdErr.length || code !== 0) {
+    const error = Buffer.concat(stdErr).toString("utf-8") || `sqlite3 exited with code ${String(code)}`;
+    throw new Error(error);
   }
   return parseCSV<T>(stdOut);
 }
diff --git a/src/textUtils.ts b/src/textUtils.ts
index 2a44c19..bd98ba5 100644
--- a/src/textUtils.ts
+++ b/src/textUtils.ts
@@ -32,7 +32,7 @@ export function groupBy<T>(
 }
 
 export function isMacOS(): boolean {
-  return navigator.appVersion.indexOf("Mac") !== -1;
+  return navigator.userAgent.includes("Mac");
 }
 
 export async function updateSection(
@@ -67,9 +67,6 @@ export async function updateSection(
 
   const editor = getEditorForFile(app, file);
   if (editor) {
-    // if the "## Logbook" header exists, we just replace the
-    // section. If it doesn't, we need to append it to the end
-    // if the file and add `\n` for separation.
     if (logbookSectionLineNum !== -1) {
       const currentSection = fileLines
         .slice(
@@ -89,16 +86,14 @@ export async function updateSection(
           : { line: fileLines.length, ch: 0 };
       editor.replaceRange(`${sectionContents}\n`, from, to);
       return true;
-    } else {
-      const pos = { line: fileLines.length, ch: 0 };
-      editor.replaceRange(`\n\n${sectionContents}`, pos, pos);
-      return true;
     }
+
+    const pos = { line: fileLines.length, ch: 0 };
+    editor.replaceRange(`\n\n${sectionContents}`, pos, pos);
+    return true;
   }
 
-  // Editor is not open, modify the file on disk...
   if (logbookSectionLineNum !== -1) {
-    // Section already exists, just replace
     const prefix = fileLines.slice(0, logbookSectionLineNum);
     const suffix =
       nextSectionLineNum !== -1 ? fileLines.slice(nextSectionLineNum) : [];
@@ -114,19 +109,12 @@ export async function updateSection(
       return false;
     }
 
-    await vault.process(
-      file,
-      () => [...prefix, sectionContents, ...suffix].join("\n")
-    );
-    return true;
-  } else {
-    // Section does not exist, append to end of file.
-    await vault.process(
-      file,
-      () => [...fileLines, "", sectionContents].join("\n")
-    );
+    await vault.process(file, () => [...prefix, sectionContents, ...suffix].join("\n"));
     return true;
   }
+
+  await vault.process(file, () => [...fileLines, "", sectionContents].join("\n"));
+  return true;
 }
 
 export function getSectionContents(