diff --git a/frappe/index.ts b/frappe/index.ts
index e490927d..19d40d4b 100644
--- a/frappe/index.ts
+++ b/frappe/index.ts
@@ -29,7 +29,6 @@ export class Frappe {
 
   errors = errors;
   isElectron = false;
-  isServer = false;
 
   pesa: MoneyMaker;
 
diff --git a/frappe/models/NumberSeries.ts b/frappe/models/NumberSeries.ts
new file mode 100644
index 00000000..ec13f80d
--- /dev/null
+++ b/frappe/models/NumberSeries.ts
@@ -0,0 +1,38 @@
+import { getPaddedName } from '@/utils';
+import frappe from 'frappe';
+import Doc from 'frappe/model/doc';
+
+export default class NumberSeries extends Doc {
+  validate() {
+    const current = this.get('current') as number | null;
+    if (current) {
+      this.current = this.get('start');
+    }
+  }
+
+  async next(schemaName: string) {
+    this.validate();
+
+    const exists = await this.checkIfCurrentExists(schemaName);
+    if (!exists) {
+      return this.getPaddedName(this.current as number);
+    }
+
+    this.current = (this.current as number) + 1;
+    await this.update();
+    return this.getPaddedName(this.current as number);
+  }
+
+  async checkIfCurrentExists(schemaName: string) {
+    if (!schemaName) {
+      return true;
+    }
+
+    const name = this.getPaddedName(this.current as number);
+    return await frappe.db.exists(schemaName, name);
+  }
+
+  getPaddedName(next: number): string {
+    return getPaddedName(this.name, next, this.padZeros);
+  }
+}
diff --git a/frappe/models/SystemSettings.ts b/frappe/models/SystemSettings.ts
new file mode 100644
index 00000000..dd164bdc
--- /dev/null
+++ b/frappe/models/SystemSettings.ts
@@ -0,0 +1,19 @@
+import { DocValue } from 'frappe/core/types';
+import Doc from 'frappe/model/doc';
+import { ValidationMap } from 'frappe/model/types';
+import { ValidationError } from 'frappe/utils/errors';
+import { t } from 'frappe/utils/translation';
+
+export default class SystemSettings extends Doc {
+  validations: ValidationMap = {
+    async displayPrecision(value: DocValue) {
+      if ((value as number) >= 0 && (value as number) <= 9) {
+        return;
+      }
+
+      throw new ValidationError(
+        t`Display Precision should have a value between 0 and 9.`
+      );
+    },
+  };
+}
diff --git a/frappe/models/doctype/NumberSeries/NumberSeries.js b/frappe/models/doctype/NumberSeries/NumberSeries.js
deleted file mode 100644
index 51b1282d..00000000
--- a/frappe/models/doctype/NumberSeries/NumberSeries.js
+++ /dev/null
@@ -1,66 +0,0 @@
-import { t } from 'frappe';
-import NumberSeries from './NumberSeriesDocument.js';
-
-const referenceTypeMap = {
-  SalesInvoice: t`Invoice`,
-  PurchaseInvoice: t`Bill`,
-  Payment: t`Payment`,
-  JournalEntry: t`Journal Entry`,
-  Quotation: t`Quotation`,
-  SalesOrder: t`SalesOrder`,
-  Fulfillment: t`Fulfillment`,
-  PurchaseOrder: t`PurchaseOrder`,
-  PurchaseReceipt: t`PurchaseReceipt`,
-  '-': t`None`,
-};
-
-export default {
-  name: 'NumberSeries',
-  label: t`Number Series`,
-  documentClass: NumberSeries,
-  doctype: 'DocType',
-  isSingle: 0,
-  isChild: 0,
-  keywordFields: [],
-  fields: [
-    {
-      fieldname: 'name',
-      label: t`Prefix`,
-      fieldtype: 'Data',
-      required: 1,
-    },
-    {
-      fieldname: 'start',
-      label: t`Start`,
-      fieldtype: 'Int',
-      default: 1001,
-      required: 1,
-      minvalue: 0,
-    },
-    {
-      fieldname: 'padZeros',
-      label: t`Pad Zeros`,
-      fieldtype: 'Int',
-      default: 4,
-      required: 1,
-    },
-    {
-      fieldname: 'referenceType',
-      label: t`Reference Type`,
-      fieldtype: 'Select',
-      options: Object.keys(referenceTypeMap),
-      map: referenceTypeMap,
-      default: '-',
-      required: 1,
-      readOnly: 1,
-    },
-    {
-      fieldname: 'current',
-      label: t`Current`,
-      fieldtype: 'Int',
-      required: 1,
-      readOnly: 1,
-    },
-  ],
-  quickEditFields: ['start', 'padZeros', 'referenceType'],
-};
diff --git a/frappe/models/doctype/NumberSeries/NumberSeriesDocument.js b/frappe/models/doctype/NumberSeries/NumberSeriesDocument.js
deleted file mode 100644
index 09c6f73c..00000000
--- a/frappe/models/doctype/NumberSeries/NumberSeriesDocument.js
+++ /dev/null
@@ -1,37 +0,0 @@
-import { getPaddedName } from '@/utils';
-import frappe from 'frappe';
-import Document from 'frappe/model/document';
-
-export default class NumberSeries extends Document {
-  validate() {
-    if (!this.current) {
-      this.current = this.start;
-    }
-  }
-
-  async next(doctype) {
-    this.validate();
-
-    const exists = await this.checkIfCurrentExists(doctype);
-    if (!exists) {
-      return this.getPaddedName(this.current);
-    }
-
-    this.current++;
-    await this.update();
-    return this.getPaddedName(this.current);
-  }
-
-  async checkIfCurrentExists(doctype) {
-    if (!doctype) {
-      return true;
-    }
-
-    const name = this.getPaddedName(this.current);
-    return await frappe.db.exists(doctype, name);
-  }
-
-  getPaddedName(next) {
-    return getPaddedName(this.name, next, this.padZeros);
-  }
-}
diff --git a/frappe/models/doctype/PatchRun/PatchRun.js b/frappe/models/doctype/PatchRun/PatchRun.js
deleted file mode 100644
index 8ec73bce..00000000
--- a/frappe/models/doctype/PatchRun/PatchRun.js
+++ /dev/null
@@ -1,12 +0,0 @@
-const { t } = require('frappe');
-
-module.exports = {
-  name: 'PatchRun',
-  fields: [
-    {
-      fieldname: 'name',
-      fieldtype: 'Data',
-      label: t`Name`,
-    },
-  ],
-};
diff --git a/frappe/models/doctype/SingleValue/SingleValue.js b/frappe/models/doctype/SingleValue/SingleValue.js
deleted file mode 100644
index 721a7b30..00000000
--- a/frappe/models/doctype/SingleValue/SingleValue.js
+++ /dev/null
@@ -1,29 +0,0 @@
-const { t } = require('frappe');
-
-module.exports = {
-  name: 'SingleValue',
-  doctype: 'DocType',
-  isSingle: 0,
-  isChild: 0,
-  keywordFields: [],
-  fields: [
-    {
-      fieldname: 'parent',
-      label: t`Parent`,
-      fieldtype: 'Data',
-      required: 1,
-    },
-    {
-      fieldname: 'fieldname',
-      label: t`Fieldname`,
-      fieldtype: 'Data',
-      required: 1,
-    },
-    {
-      fieldname: 'value',
-      label: t`Value`,
-      fieldtype: 'Data',
-      required: 1,
-    },
-  ],
-};
diff --git a/frappe/models/doctype/SystemSettings/SystemSettings.js b/frappe/models/doctype/SystemSettings/SystemSettings.js
deleted file mode 100644
index 45603b80..00000000
--- a/frappe/models/doctype/SystemSettings/SystemSettings.js
+++ /dev/null
@@ -1,94 +0,0 @@
-const { DateTime } = require('luxon');
-const { t } = require('frappe');
-const {
-  DEFAULT_DISPLAY_PRECISION,
-  DEFAULT_INTERNAL_PRECISION,
-  DEFAULT_LOCALE,
-} = require('../../../utils/consts');
-
-let dateFormatOptions = (() => {
-  let formats = [
-    'dd/MM/yyyy',
-    'MM/dd/yyyy',
-    'dd-MM-yyyy',
-    'MM-dd-yyyy',
-    'yyyy-MM-dd',
-    'd MMM, y',
-    'MMM d, y',
-  ];
-
-  let today = DateTime.local();
-
-  return formats.map((format) => {
-    return {
-      label: today.toFormat(format),
-      value: format,
-    };
-  });
-})();
-
-module.exports = {
-  name: 'SystemSettings',
-  label: t`System Settings`,
-  doctype: 'DocType',
-  isSingle: 1,
-  isChild: 0,
-  keywordFields: [],
-  fields: [
-    {
-      fieldname: 'dateFormat',
-      label: t`Date Format`,
-      fieldtype: 'Select',
-      options: dateFormatOptions,
-      default: 'MMM d, y',
-      required: 1,
-      description: t`Sets the app-wide date display format.`,
-    },
-    {
-      fieldname: 'locale',
-      label: t`Locale`,
-      fieldtype: 'Data',
-      default: DEFAULT_LOCALE,
-      description: t`Set the local code. This is used for number formatting.`,
-    },
-    {
-      fieldname: 'displayPrecision',
-      label: t`Display Precision`,
-      fieldtype: 'Int',
-      default: DEFAULT_DISPLAY_PRECISION,
-      required: 1,
-      minValue: 0,
-      maxValue: 9,
-      validate(value, doc) {
-        if (value >= 0 && value <= 9) {
-          return;
-        }
-        throw new frappe.errors.ValidationError(
-          t`Display Precision should have a value between 0 and 9.`
-        );
-      },
-      description: t`Sets how many digits are shown after the decimal point.`,
-    },
-    {
-      fieldname: 'internalPrecision',
-      label: t`Internal Precision`,
-      fieldtype: 'Int',
-      minValue: 0,
-      default: DEFAULT_INTERNAL_PRECISION,
-      description: t`Sets the internal precision used for monetary calculations. Above 6 should be sufficient for most currencies.`,
-    },
-    {
-      fieldname: 'hideGetStarted',
-      label: t`Hide Get Started`,
-      fieldtype: 'Check',
-      default: 0,
-      description: t`Hides the Get Started section from the sidebar. Change will be visible on restart or refreshing the app.`,
-    },
-  ],
-  quickEditFields: [
-    'locale',
-    'dateFormat',
-    'displayPrecision',
-    'hideGetStarted',
-  ],
-};
diff --git a/frappe/models/index.js b/frappe/models/index.js
deleted file mode 100644
index b24843d0..00000000
--- a/frappe/models/index.js
+++ /dev/null
@@ -1,11 +0,0 @@
-import NumberSeries from './doctype/NumberSeries/NumberSeries.js';
-import PatchRun from './doctype/PatchRun/PatchRun.js';
-import SingleValue from './doctype/SingleValue/SingleValue.js';
-import SystemSettings from './doctype/SystemSettings/SystemSettings.js';
-
-export default {
-  NumberSeries,
-  SingleValue,
-  SystemSettings,
-  PatchRun,
-};
diff --git a/frappe/models/index.ts b/frappe/models/index.ts
new file mode 100644
index 00000000..ce29ca97
--- /dev/null
+++ b/frappe/models/index.ts
@@ -0,0 +1,7 @@
+import NumberSeries from './NumberSeries.js';
+import SystemSettings from './SystemSettings';
+
+export default {
+  NumberSeries,
+  SystemSettings,
+};
diff --git a/src/main.js b/src/main.js
index 6e564444..ed9b3688 100644
--- a/src/main.js
+++ b/src/main.js
@@ -22,7 +22,6 @@ import { setLanguageMap, stringifyCircular } from './utils';
     window.config = config;
   }
 
-  frappe.isServer = true;
   frappe.isElectron = true;
 
   const models = (await import('../models')).default;