diff --git a/.eslintrc.js b/.eslintrc.js
index a4cea40931..d25922b741 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -12,6 +12,7 @@ https://github.com/typescript-eslint/tslint-to-eslint-config/blob/master/docs/FA
 Happy linting! 💖
 */
 module.exports = {
+    extends: "eslint:recommended",
     env: {
         browser: true,
         es6: true,
@@ -33,6 +34,31 @@ module.exports = {
     ],
     root: true,
     rules: {
+        "no-undef": "off",
+        "no-extra-boolean-cast": "off",
+        "no-alert": "error",
+        "no-self-compare": "error",
+        "no-unreachable-loop": "error",
+        "no-template-curly-in-string": "error",
+        "no-unused-private-class-members": "error",
+        "no-extend-native": "error",
+        "no-floating-decimal": "error",
+        "no-implied-eval": "error",
+        "no-iterator": "error",
+        "no-lone-blocks": "error",
+        "no-loop-func": "error",
+        "no-new-object": "error",
+        "no-proto": "error",
+        "no-useless-catch": "error",
+        "one-var-declaration-per-line": "error",
+        "prefer-arrow-callback": "error",
+        "prefer-destructuring": "error",
+        "prefer-exponentiation-operator": "error",
+        "prefer-promise-reject-errors": "error",
+        "prefer-regex-literals": "error",
+        "prefer-spread": "error",
+        "prefer-template": "error",
+        "require-await": "error",
         "@typescript-eslint/adjacent-overload-signatures": "error",
         "@typescript-eslint/array-type": [
             "error",
@@ -95,22 +121,6 @@ module.exports = {
                 allowTypedFunctionExpressions: false,
             },
         ],
-        "@typescript-eslint/indent": [
-            "error",
-            4,
-            {
-                ObjectExpression: "first",
-                FunctionDeclaration: {
-                    parameters: "first",
-                },
-                FunctionExpression: {
-                    parameters: "first",
-                },
-                SwitchCase: 1,
-                flatTernaryExpressions: false,
-                ignoredNodes: [],
-            },
-        ],
         "@typescript-eslint/naming-convention": [
             "error",
             {
@@ -176,7 +186,7 @@ module.exports = {
         "import/order": "error",
         indent: "off",
         "jsdoc/check-alignment": "error",
-        "jsdoc/check-indentation": "error",
+        "jsdoc/check-indentation": "off",
         "jsdoc/newline-after-description": "error",
         "max-classes-per-file": "off",
         "max-len": "off",
@@ -245,6 +255,7 @@ module.exports = {
         "functional/no-method-signature": "error",
         "functional/no-mixed-type": "error",
         "functional/prefer-readonly-type": "error",
+        "no-unused-vars": ["error", { argsIgnorePattern: "^[_]+$" }],
     },
     overrides: [
         {
@@ -252,6 +263,7 @@ module.exports = {
             rules: {
                 "@typescript-eslint/no-unused-expressions": "off",
                 "@typescript-eslint/dot-notation": "off",
+                "prefer-destructuring": "off",
             },
         },
     ],
diff --git a/demo/74-nodejs-stream.ts b/demo/74-nodejs-stream.ts
index 4dea1f7524..0a73bd0508 100644
--- a/demo/74-nodejs-stream.ts
+++ b/demo/74-nodejs-stream.ts
@@ -1,4 +1,4 @@
-// Simple example to add text to a document
+// Exporting the document as a stream
 // Import from 'docx' rather than '../build' if you install from npm
 import * as fs from "fs";
 import { Document, Packer, Paragraph, TextRun } from "../build";
@@ -26,6 +26,5 @@ const doc = new Document({
     ],
 });
 
-Packer.toStream(doc).then((stream) => {
-    stream.pipe(fs.createWriteStream("My Document.docx"));
-});
+const stream = Packer.toStream(doc);
+stream.pipe(fs.createWriteStream("My Document.docx"));
diff --git a/src/export/packer/next-compiler.spec.ts b/src/export/packer/next-compiler.spec.ts
index 3cd56c211f..2daac3460a 100644
--- a/src/export/packer/next-compiler.spec.ts
+++ b/src/export/packer/next-compiler.spec.ts
@@ -25,7 +25,7 @@ describe("Compiler", () => {
     });
 
     describe("#compile()", () => {
-        it("should pack all the content", async function () {
+        it("should pack all the content", function () {
             this.timeout(99999999);
             const file = new File({
                 sections: [],
@@ -53,7 +53,7 @@ describe("Compiler", () => {
             expect(fileNames).to.include("_rels/.rels");
         });
 
-        it("should pack all additional headers and footers", async function () {
+        it("should pack all additional headers and footers", function () {
             const file = new File({
                 sections: [
                     {
diff --git a/src/export/packer/packer.spec.ts b/src/export/packer/packer.spec.ts
index 9dd5d55021..7055db1e06 100644
--- a/src/export/packer/packer.spec.ts
+++ b/src/export/packer/packer.spec.ts
@@ -54,7 +54,7 @@ describe("Packer", () => {
             assert.isTrue(buffer.byteLength > 0);
         });
 
-        it("should handle exception if it throws any", async () => {
+        it("should handle exception if it throws any", () => {
             // eslint-disable-next-line @typescript-eslint/no-explicit-any
             const compiler = stub((Packer as any).compiler, "compile");
 
@@ -139,7 +139,7 @@ describe("Packer", () => {
             const stream = await Packer.toStream(file);
             return new Promise((resolve, reject) => {
                 stream.on("error", () => {
-                    reject();
+                    reject(new Error());
                 });
 
                 stream.on("end", () => {
@@ -148,7 +148,7 @@ describe("Packer", () => {
             });
         });
 
-        it("should handle exception if it throws any", async () => {
+        it("should handle exception if it throws any", () => {
             // eslint-disable-next-line @typescript-eslint/no-explicit-any
             const compiler = stub((Packer as any).compiler, "compile").callsFake(() => ({
                 // tslint:disable-next-line: no-empty
@@ -160,9 +160,11 @@ describe("Packer", () => {
             }));
 
             compiler.throwsException();
-            return Packer.toStream(file).catch((error) => {
+            try {
+                Packer.toStream(file);
+            } catch (error) {
                 assert.isDefined(error);
-            });
+            }
         });
 
         afterEach(() => {
diff --git a/src/export/packer/packer.ts b/src/export/packer/packer.ts
index 9e230fda86..523d0226aa 100644
--- a/src/export/packer/packer.ts
+++ b/src/export/packer/packer.ts
@@ -58,7 +58,7 @@ export class Packer {
         return zipData;
     }
 
-    public static async toStream(file: File, prettify?: boolean | PrettifyType): Promise<Stream> {
+    public static toStream(file: File, prettify?: boolean | PrettifyType): Stream {
         const zip = this.compiler.compile(file, prettify);
         const zipData = zip.generateNodeStream({
             type: "nodebuffer",
diff --git a/src/file/custom-properties/custom-properties.ts b/src/file/custom-properties/custom-properties.ts
index 8c15db148f..c85a02ef74 100644
--- a/src/file/custom-properties/custom-properties.ts
+++ b/src/file/custom-properties/custom-properties.ts
@@ -33,6 +33,7 @@ export class CustomProperties extends XmlComponent {
     }
 
     public addCustomProperty(property: ICustomPropertyOptions): void {
+        // eslint-disable-next-line functional/immutable-data
         this.properties.push(new CustomProperty(this.nextId++, property));
     }
 }
diff --git a/src/file/file.ts b/src/file/file.ts
index aa1b1c64e1..0f170d7d7f 100644
--- a/src/file/file.ts
+++ b/src/file/file.ts
@@ -37,13 +37,13 @@ export interface ISectionOptions {
 }
 
 export class File {
-    // eslint-disable-next-line functional/immutable-data
+    // eslint-disable-next-line functional/prefer-readonly-type
     private currentRelationshipId: number = 1;
 
     private readonly documentWrapper: DocumentWrapper;
-    // eslint-disable-next-line functional/immutable-data
+    // eslint-disable-next-line functional/prefer-readonly-type
     private readonly headers: IDocumentHeader[] = [];
-    // eslint-disable-next-line functional/immutable-data
+    // eslint-disable-next-line functional/prefer-readonly-type
     private readonly footers: IDocumentFooter[] = [];
     private readonly coreProperties: CoreProperties;
     private readonly numbering: Numbering;
@@ -128,7 +128,7 @@ export class File {
         }
 
         if (options.footnotes) {
-            // tslint:disable-next-line: forin
+            // eslint-disable-next-line guard-for-in
             for (const key in options.footnotes) {
                 this.footnotesWrapper.View.createFootNote(parseFloat(key), options.footnotes[key].children);
             }
@@ -156,6 +156,7 @@ export class File {
     }
 
     private createHeader(header: Header): HeaderWrapper {
+        // eslint-disable-next-line functional/immutable-data
         const wrapper = new HeaderWrapper(this.media, this.currentRelationshipId++);
 
         for (const child of header.options.children) {
@@ -167,6 +168,7 @@ export class File {
     }
 
     private createFooter(footer: Footer): FooterWrapper {
+        // eslint-disable-next-line functional/immutable-data
         const wrapper = new FooterWrapper(this.media, this.currentRelationshipId++);
 
         for (const child of footer.options.children) {
@@ -178,6 +180,7 @@ export class File {
     }
 
     private addHeaderToDocument(header: HeaderWrapper, type: HeaderFooterReferenceType = HeaderFooterReferenceType.DEFAULT): void {
+        // eslint-disable-next-line functional/immutable-data
         this.headers.push({ header, type });
         this.documentWrapper.Relationships.createRelationship(
             header.View.ReferenceId,
@@ -188,6 +191,7 @@ export class File {
     }
 
     private addFooterToDocument(footer: FooterWrapper, type: HeaderFooterReferenceType = HeaderFooterReferenceType.DEFAULT): void {
+        // eslint-disable-next-line functional/immutable-data
         this.footers.push({ footer, type });
         this.documentWrapper.Relationships.createRelationship(
             footer.View.ReferenceId,
@@ -220,26 +224,31 @@ export class File {
         );
 
         this.documentWrapper.Relationships.createRelationship(
+            // eslint-disable-next-line functional/immutable-data
             this.currentRelationshipId++,
             "http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles",
             "styles.xml",
         );
         this.documentWrapper.Relationships.createRelationship(
+            // eslint-disable-next-line functional/immutable-data
             this.currentRelationshipId++,
             "http://schemas.openxmlformats.org/officeDocument/2006/relationships/numbering",
             "numbering.xml",
         );
         this.documentWrapper.Relationships.createRelationship(
+            // eslint-disable-next-line functional/immutable-data
             this.currentRelationshipId++,
             "http://schemas.openxmlformats.org/officeDocument/2006/relationships/footnotes",
             "footnotes.xml",
         );
         this.documentWrapper.Relationships.createRelationship(
+            // eslint-disable-next-line functional/immutable-data
             this.currentRelationshipId++,
             "http://schemas.openxmlformats.org/officeDocument/2006/relationships/settings",
             "settings.xml",
         );
         this.documentWrapper.Relationships.createRelationship(
+            // eslint-disable-next-line functional/immutable-data
             this.currentRelationshipId++,
             "http://schemas.openxmlformats.org/officeDocument/2006/relationships/comments",
             "comments.xml",
diff --git a/src/file/header.ts b/src/file/header.ts
index d9dd2166f5..76f008ed76 100644
--- a/src/file/header.ts
+++ b/src/file/header.ts
@@ -6,13 +6,17 @@ export interface IHeaderOptions {
 }
 
 export class Header {
-    public constructor(public readonly options: IHeaderOptions = { children: [] }) {
-        // noop
+    public readonly options: IHeaderOptions;
+
+    public constructor(options: IHeaderOptions = { children: [] }) {
+        this.options = options;
     }
 }
 
 export class Footer {
-    public constructor(public readonly options: IHeaderOptions = { children: [] }) {
-        // noop
+    public readonly options: IHeaderOptions;
+
+    public constructor(options: IHeaderOptions = { children: [] }) {
+        this.options = options;
     }
 }
diff --git a/src/file/media/media.spec.ts b/src/file/media/media.spec.ts
index 79f6591888..9886fa811f 100644
--- a/src/file/media/media.spec.ts
+++ b/src/file/media/media.spec.ts
@@ -37,6 +37,7 @@ describe("Media", () => {
         });
 
         it("should return UInt8Array if atob is present", () => {
+            // eslint-disable-next-line functional/immutable-data
             global.atob = () => "atob result";
 
             const image = new Media().addMedia("", {
@@ -45,11 +46,12 @@ describe("Media", () => {
             });
             expect(image.stream).to.be.an.instanceof(Uint8Array);
 
-            // tslint:disable-next-line: no-any
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any, functional/immutable-data
             (global as any).atob = undefined;
         });
 
         it("should use data as is if its not a string", () => {
+            // eslint-disable-next-line  functional/immutable-data
             global.atob = () => "atob result";
 
             const image = new Media().addMedia(Buffer.from(""), {
@@ -58,7 +60,7 @@ describe("Media", () => {
             });
             expect(image.stream).to.be.an.instanceof(Uint8Array);
 
-            // tslint:disable-next-line: no-any
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any, functional/immutable-data
             (global as any).atob = undefined;
         });
     });
diff --git a/src/file/numbering/numbering.spec.ts b/src/file/numbering/numbering.spec.ts
index fb81a17e2b..71540f8691 100644
--- a/src/file/numbering/numbering.spec.ts
+++ b/src/file/numbering/numbering.spec.ts
@@ -34,13 +34,14 @@ describe("Numbering", () => {
                 .filter((el) => el["w:lvl"])
                 .forEach((el, ix) => {
                     expect(Object.keys(el)).to.have.lengthOf(1);
-                    expect(Object.keys(el["w:lvl"]).sort()).to.deep.equal(["_attr", "w:start", "w:lvlJc", "w:numFmt", "w:pPr", "w:rPr"]);
+                    expect(Object.keys(el["w:lvl"])).to.deep.equal(["_attr", "w:start", "w:lvlJc", "w:numFmt", "w:pPr", "w:rPr"]);
                     expect(el["w:lvl"]).to.have.deep.members([
                         { _attr: { "w:ilvl": ix, "w15:tentative": 1 } },
                         { "w:start": [{ _attr: { "w:val": 1 } }] },
                         { "w:lvlJc": [{ _attr: { "w:val": "left" } }] },
                         { "w:numFmt": [{ _attr: { "w:val": "bullet" } }] },
                     ]);
+                    // TODO
                     // Once chai 4.0.0 lands and #644 is resolved, we can add the following to the test:
                     // {"w:lvlText": {"_attr": {"w:val": "•"}}},
                     // {"w:rPr": [{"w:rFonts": {"_attr": {"w:ascii": "Symbol", "w:cs": "Symbol", "w:eastAsia": "Symbol", "w:hAnsi": "Symbol", "w:hint": "default"}}}]},
diff --git a/src/file/paragraph/run/image-run.spec.ts b/src/file/paragraph/run/image-run.spec.ts
index 7887d4b0cd..c59ddd1ff4 100644
--- a/src/file/paragraph/run/image-run.spec.ts
+++ b/src/file/paragraph/run/image-run.spec.ts
@@ -771,7 +771,7 @@ describe("ImageRun", () => {
                 ],
             });
 
-            // tslint:disable-next-line: no-any
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any, functional/immutable-data
             (global as any).atob = undefined;
         });
 
@@ -1028,7 +1028,7 @@ describe("ImageRun", () => {
                 ],
             });
 
-            // tslint:disable-next-line: no-any
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any, functional/immutable-data
             (global as any).atob = undefined;
         });
     });
diff --git a/src/file/xml-components/imported-xml-component.ts b/src/file/xml-components/imported-xml-component.ts
index 5385e8a9b6..aad5719f52 100644
--- a/src/file/xml-components/imported-xml-component.ts
+++ b/src/file/xml-components/imported-xml-component.ts
@@ -1,4 +1,3 @@
-// eslint-disable @typescript-eslint/no-explicit-any
 import { Element as XmlElement, xml2js } from "xml-js";
 
 import { IXmlableObject, XmlAttributeComponent, XmlComponent } from "@file/xml-components";
@@ -15,7 +14,9 @@ export const convertToXmlComponent = (element: XmlElement): ImportedXmlComponent
     switch (element.type) {
         case undefined:
         case "element":
+            // eslint-disable-next-line no-case-declarations
             const xmlComponent = new ImportedXmlComponent(element.name as string, element.attributes);
+            // eslint-disable-next-line no-case-declarations
             const childElements = element.elements || [];
             for (const childElm of childElements) {
                 const child = convertToXmlComponent(childElm);
@@ -31,6 +32,7 @@ export const convertToXmlComponent = (element: XmlElement): ImportedXmlComponent
     }
 };
 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
 class ImportedXmlComponentAttributes extends XmlAttributeComponent<any> {
     // noop
 }
@@ -54,7 +56,7 @@ export class ImportedXmlComponent extends XmlComponent {
      * @param importedContent xml content of the imported component
      */
 
-    // tslint:disable-next-line:variable-name
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     public constructor(rootKey: string, _attr?: any) {
         super(rootKey);
         if (_attr) {
@@ -71,7 +73,7 @@ export class ImportedXmlComponent extends XmlComponent {
  * Used for the attributes of root element that is being imported.
  */
 export class ImportedRootElementAttributes extends XmlComponent {
-    // tslint:disable-next-line:variable-name
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     public constructor(private readonly _attr: any) {
         super("");
     }
diff --git a/src/util/values.ts b/src/util/values.ts
index fa666bd084..f44e2eb1d9 100644
--- a/src/util/values.ts
+++ b/src/util/values.ts
@@ -32,7 +32,7 @@ export const unsignedDecimalNumber = (val: number): number => {
 // http://www.datypic.com/sc/xsd/t-xsd_hexBinary.html
 const hexBinary = (val: string, length: number): string => {
     const expectedLength = length * 2;
-    if (val.length !== expectedLength || isNaN(Number("0x" + val))) {
+    if (val.length !== expectedLength || isNaN(Number(`0x${val}`))) {
         throw new Error(`Invalid hex value '${val}'. Expected ${expectedLength} digit hex value`);
     }
     return val;