diff --git a/.eslintrc b/.eslintrc
index 3240625..6fb31c5 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -6,6 +6,7 @@
     "no-console": "warn",
     "typescript/no-unused-vars": "error",
     "typescript/explicit-member-accessibility": "error",
+    "typescript/member-ordering": "error",
     "no-only-tests/no-only-tests": "error"
   }
 }
diff --git a/package-lock.json b/package-lock.json
index 2d4f7eb..0689200 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1305,7 +1305,7 @@
     },
     "ansi-escapes": {
       "version": "3.1.0",
-      "resolved": "http://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.1.0.tgz",
       "integrity": "sha512-UgAb8H9D41AQnu/PbWlCofQVcnV4Gs2bBJi9eZPxfU/hgglFh3SMDMENRIqdr7H6XFnXdoknctFByVsCOotTVw==",
       "dev": true
     },
@@ -1440,7 +1440,7 @@
         },
         "util": {
           "version": "0.10.3",
-          "resolved": "http://registry.npmjs.org/util/-/util-0.10.3.tgz",
+          "resolved": "https://registry.npmjs.org/util/-/util-0.10.3.tgz",
           "integrity": "sha1-evsa/lCAUkZInj23/g7TeTNqwPk=",
           "dev": true,
           "requires": {
@@ -1678,7 +1678,7 @@
     },
     "browserify-aes": {
       "version": "1.2.0",
-      "resolved": "http://registry.npmjs.org/browserify-aes/-/browserify-aes-1.2.0.tgz",
+      "resolved": "https://registry.npmjs.org/browserify-aes/-/browserify-aes-1.2.0.tgz",
       "integrity": "sha512-+7CHXqGuspUn/Sl5aO7Ea0xWGAtETPXNSAjHo48JfLdPWcMng33Xe4znFvQweqc/uzk5zSOI3H52CYnjCfb5hA==",
       "dev": true,
       "requires": {
@@ -1715,7 +1715,7 @@
     },
     "browserify-rsa": {
       "version": "4.0.1",
-      "resolved": "http://registry.npmjs.org/browserify-rsa/-/browserify-rsa-4.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/browserify-rsa/-/browserify-rsa-4.0.1.tgz",
       "integrity": "sha1-IeCr+vbyApzy+vsTNWenAdQTVSQ=",
       "dev": true,
       "requires": {
@@ -1760,7 +1760,7 @@
     },
     "buffer": {
       "version": "4.9.1",
-      "resolved": "http://registry.npmjs.org/buffer/-/buffer-4.9.1.tgz",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-4.9.1.tgz",
       "integrity": "sha1-bRu2AbB6TvztlwlBMgkwJ8lbwpg=",
       "dev": true,
       "requires": {
@@ -1806,7 +1806,7 @@
     },
     "cacache": {
       "version": "10.0.4",
-      "resolved": "http://registry.npmjs.org/cacache/-/cacache-10.0.4.tgz",
+      "resolved": "https://registry.npmjs.org/cacache/-/cacache-10.0.4.tgz",
       "integrity": "sha512-Dph0MzuH+rTQzGPNT9fAnrPmMmjKfST6trxJeK7NQuHRaVw24VzPRWTmg9MpcwOVQZO0E1FBICUlFeNaKPIfHA==",
       "dev": true,
       "requires": {
@@ -2200,7 +2200,7 @@
     },
     "create-hash": {
       "version": "1.2.0",
-      "resolved": "http://registry.npmjs.org/create-hash/-/create-hash-1.2.0.tgz",
+      "resolved": "https://registry.npmjs.org/create-hash/-/create-hash-1.2.0.tgz",
       "integrity": "sha512-z00bCGNHDG8mHAkP7CtT1qVu+bFQUPjYq/4Iv3C3kWjTFV10zIjfSoeqXo9Asws8gwSHDGj/hl2u4OGIjapeCg==",
       "dev": true,
       "requires": {
@@ -2213,7 +2213,7 @@
     },
     "create-hmac": {
       "version": "1.1.7",
-      "resolved": "http://registry.npmjs.org/create-hmac/-/create-hmac-1.1.7.tgz",
+      "resolved": "https://registry.npmjs.org/create-hmac/-/create-hmac-1.1.7.tgz",
       "integrity": "sha512-MJG9liiZ+ogc4TzUwuvbER1JRdgvUFSB5+VR/g5h82fGaIRWMWddtKBHi7/sVhfjQZ6SehlyhvQYrcYkaUIpLg==",
       "dev": true,
       "requires": {
@@ -2257,7 +2257,7 @@
     },
     "css-select": {
       "version": "1.2.0",
-      "resolved": "http://registry.npmjs.org/css-select/-/css-select-1.2.0.tgz",
+      "resolved": "https://registry.npmjs.org/css-select/-/css-select-1.2.0.tgz",
       "integrity": "sha1-KzoRBTnFNV8c2NMUYj6HCxIeyFg=",
       "requires": {
         "boolbase": "~1.0.0",
@@ -2411,7 +2411,7 @@
     },
     "diffie-hellman": {
       "version": "5.0.3",
-      "resolved": "http://registry.npmjs.org/diffie-hellman/-/diffie-hellman-5.0.3.tgz",
+      "resolved": "https://registry.npmjs.org/diffie-hellman/-/diffie-hellman-5.0.3.tgz",
       "integrity": "sha512-kqag/Nl+f3GwyK25fhUMYj81BUOrZ9IuJsjIcDE5icNM9FJHAVm3VcUDxdLPoQtTuUylWm6ZIknYJwwaPxsUzg==",
       "dev": true,
       "requires": {
@@ -2467,7 +2467,7 @@
       "dependencies": {
         "domelementtype": {
           "version": "1.1.3",
-          "resolved": "http://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
           "integrity": "sha1-vSh3PiZCiBrsUVRJJCmcXNgiGFs="
         }
       }
@@ -2850,7 +2850,7 @@
     },
     "events": {
       "version": "1.1.1",
-      "resolved": "http://registry.npmjs.org/events/-/events-1.1.1.tgz",
+      "resolved": "https://registry.npmjs.org/events/-/events-1.1.1.tgz",
       "integrity": "sha1-nr23Y1rQmccNzEwqH1AEKI6L2SQ=",
       "dev": true
     },
@@ -3763,7 +3763,7 @@
     },
     "get-stream": {
       "version": "3.0.0",
-      "resolved": "http://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
+      "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
       "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ=",
       "dev": true
     },
@@ -4174,7 +4174,7 @@
     },
     "is-builtin-module": {
       "version": "1.0.0",
-      "resolved": "http://registry.npmjs.org/is-builtin-module/-/is-builtin-module-1.0.0.tgz",
+      "resolved": "https://registry.npmjs.org/is-builtin-module/-/is-builtin-module-1.0.0.tgz",
       "integrity": "sha1-VAVy0096wxGfj3bDDLwbHgN6/74=",
       "dev": true,
       "requires": {
@@ -4392,7 +4392,7 @@
     },
     "json5": {
       "version": "0.5.1",
-      "resolved": "http://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
+      "resolved": "https://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
       "integrity": "sha1-Hq3nrMASA0rYTiOWdn6tn6VJWCE=",
       "dev": true
     },
@@ -4730,7 +4730,7 @@
     },
     "mkdirp": {
       "version": "0.5.1",
-      "resolved": "http://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
       "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
       "requires": {
         "minimist": "0.0.8"
@@ -5412,7 +5412,7 @@
     },
     "os-tmpdir": {
       "version": "1.0.2",
-      "resolved": "http://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
+      "resolved": "https://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
       "integrity": "sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=",
       "dev": true
     },
@@ -5465,7 +5465,7 @@
     },
     "parse-asn1": {
       "version": "5.1.1",
-      "resolved": "http://registry.npmjs.org/parse-asn1/-/parse-asn1-5.1.1.tgz",
+      "resolved": "https://registry.npmjs.org/parse-asn1/-/parse-asn1-5.1.1.tgz",
       "integrity": "sha512-KPx7flKXg775zZpnp9SxJlz00gTd4BmJ2yJufSc44gMCRrRQ7NSzAcSJQfifuOLgW6bEi+ftrALtsgALeB2Adw==",
       "dev": true,
       "requires": {
@@ -5510,7 +5510,7 @@
     },
     "path-is-absolute": {
       "version": "1.0.1",
-      "resolved": "http://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
       "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18="
     },
     "path-is-inside": {
@@ -6008,7 +6008,7 @@
     },
     "safe-regex": {
       "version": "1.1.0",
-      "resolved": "http://registry.npmjs.org/safe-regex/-/safe-regex-1.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/safe-regex/-/safe-regex-1.1.0.tgz",
       "integrity": "sha1-QKNmnzsHfR6UPURinhV91IAjvy4=",
       "dev": true,
       "requires": {
@@ -6094,7 +6094,7 @@
     },
     "sha.js": {
       "version": "2.4.11",
-      "resolved": "http://registry.npmjs.org/sha.js/-/sha.js-2.4.11.tgz",
+      "resolved": "https://registry.npmjs.org/sha.js/-/sha.js-2.4.11.tgz",
       "integrity": "sha512-QMEp5B7cftE7APOjk5Y6xgrbWu+WkLVQwk8JNjZ8nKRciZaByEW6MubieAiToS7+dwvrjGhH8jRXz3MVd0AYqQ==",
       "dev": true,
       "requires": {
@@ -6382,7 +6382,7 @@
     },
     "stream-browserify": {
       "version": "2.0.1",
-      "resolved": "http://registry.npmjs.org/stream-browserify/-/stream-browserify-2.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/stream-browserify/-/stream-browserify-2.0.1.tgz",
       "integrity": "sha1-ZiZu5fm9uZQKTkUUyvtDu3Hlyds=",
       "dev": true,
       "requires": {
@@ -6467,7 +6467,7 @@
     },
     "strip-ansi": {
       "version": "3.0.1",
-      "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
       "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
       "dev": true,
       "requires": {
@@ -6476,7 +6476,7 @@
     },
     "strip-eof": {
       "version": "1.0.0",
-      "resolved": "http://registry.npmjs.org/strip-eof/-/strip-eof-1.0.0.tgz",
+      "resolved": "https://registry.npmjs.org/strip-eof/-/strip-eof-1.0.0.tgz",
       "integrity": "sha1-u0P/VZim6wXYm1n80SnJgzE2Br8=",
       "dev": true
     },
@@ -7660,7 +7660,7 @@
     },
     "webpack-node-externals": {
       "version": "1.7.2",
-      "resolved": "http://registry.npmjs.org/webpack-node-externals/-/webpack-node-externals-1.7.2.tgz",
+      "resolved": "https://registry.npmjs.org/webpack-node-externals/-/webpack-node-externals-1.7.2.tgz",
       "integrity": "sha512-ajerHZ+BJKeCLviLUUmnyd5B4RavLF76uv3cs6KNuO8W+HuQaEs0y0L7o40NQxdPy5w0pcv8Ew7yPUAQG0UdCg==",
       "dev": true
     },
@@ -7705,7 +7705,7 @@
     },
     "wrap-ansi": {
       "version": "2.1.0",
-      "resolved": "http://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
       "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
       "dev": true,
       "requires": {
diff --git a/src/scraper/scrape-step/downloader/implementations/http.ts b/src/scraper/scrape-step/downloader/implementations/http.ts
index cd96626..f8ff975 100644
--- a/src/scraper/scrape-step/downloader/implementations/http.ts
+++ b/src/scraper/scrape-step/downloader/implementations/http.ts
@@ -31,11 +31,6 @@ type FetchFunction = (
 export class Downloader extends AbstractDownloader<DownloadData> {
   private urlTemplate: ReturnType<typeof compileTemplate>
   private headerTemplates: Map<string, ReturnType<typeof compileTemplate>>
-  private verifyResponseOk = (response: Fetch.Response, url: string) => {
-    if (!response.ok) {
-      throw new Error(`status ${response.status} for ${url}`)
-    }
-  }
   private fetcher: FetchFunction
 
   public constructor(config: ScrapeConfig, options: Options, tools: Tools) {
@@ -80,6 +75,11 @@ export class Downloader extends AbstractDownloader<DownloadData> {
     return this.fetcher(downloadId, downloadData)
   }
 
+  private verifyResponseOk = (response: Fetch.Response, url: string) => {
+    if (!response.ok) {
+      throw new Error(`status ${response.status} for ${url}`)
+    }
+  }
   private downloadToFileAndMemory: FetchFunction = async (
     downloadId,
     [url, fetchOptions]
diff --git a/src/scraper/scrape-step/index.ts b/src/scraper/scrape-step/index.ts
index 4a9479a..b0c124f 100644
--- a/src/scraper/scrape-step/index.ts
+++ b/src/scraper/scrape-step/index.ts
@@ -1,6 +1,5 @@
 import * as Rx from 'rxjs'
 import * as ops from 'rxjs/operators'
-import VError from 'verror'
 import { downloaderClassFactory } from './downloader'
 import { parserClassFactory } from './parser'
 import { incrementer } from './incrementer'
@@ -69,6 +68,22 @@ class ScrapeStep extends AbstractScrapeStep {
       scrapeNextChild
     )
   }
+
+  public run: typeof AbstractScrapeStep.prototype.run = (
+    parentValues: ParsedValue[]
+  ): Rx.Observable<ParsedValue[]> =>
+    Rx.from(parentValues).pipe(
+      ops.flatMap(this.incrementObservableFunction),
+      ops.catchError(wrapError(`scraper '${this.scraperName}'`)),
+      ops.flatMap(
+        parsedValues =>
+          this.children.length
+            ? this.children.map(child => child.run(parsedValues))
+            : [Rx.of(parsedValues)]
+      ),
+      ops.mergeAll()
+    )
+
   private downloadParseFunction: DownloadParseFunction = async (
     { parsedValue: value, id: parentId },
     incrementIndex
@@ -115,20 +130,6 @@ class ScrapeStep extends AbstractScrapeStep {
       return parsedValuesWithId
     }
   }
-  public run: typeof AbstractScrapeStep.prototype.run = (
-    parentValues: ParsedValue[]
-  ): Rx.Observable<ParsedValue[]> =>
-    Rx.from(parentValues).pipe(
-      ops.flatMap(this.incrementObservableFunction),
-      ops.catchError(wrapError(`scraper '${this.scraperName}'`)),
-      ops.flatMap(
-        parsedValues =>
-          this.children.length
-            ? this.children.map(child => child.run(parsedValues))
-            : [Rx.of(parsedValues)]
-      ),
-      ops.mergeAll()
-    )
 }
 
 export { ScrapeStep, IdentityScrapeStep }
diff --git a/src/scraper/scrape-step/parser/implementations/html.ts b/src/scraper/scrape-step/parser/implementations/html.ts
index d0abaa1..0ff65ea 100644
--- a/src/scraper/scrape-step/parser/implementations/html.ts
+++ b/src/scraper/scrape-step/parser/implementations/html.ts
@@ -8,6 +8,12 @@ import { Tools } from '../../../../tools'
 export class Parser extends AbstractParser {
   private parser: (value: string) => string[]
 
+  public constructor(config: ScrapeConfig, options: Options, tools: Tools) {
+    super(config, options, tools)
+    this.parser = this.attribute ? this.selectAttrVals : this.selectTextVals
+  }
+  protected parse = (value: string) => this.parser(value)
+
   private selectTextVals = (value: string) => {
     const $ = cheerio.load(value)
     const values: string[] = []
@@ -26,10 +32,4 @@ export class Parser extends AbstractParser {
     })
     return values
   }
-  protected parse = (value: string) => this.parser(value)
-
-  public constructor(config: ScrapeConfig, options: Options, tools: Tools) {
-    super(config, options, tools)
-    this.parser = this.attribute ? this.selectAttrVals : this.selectTextVals
-  }
 }
diff --git a/src/tools/emitter.ts b/src/tools/emitter.ts
index 5d0fb89..589cd76 100644
--- a/src/tools/emitter.ts
+++ b/src/tools/emitter.ts
@@ -12,13 +12,6 @@ const scraperEvents = {
 }
 
 class ScraperEmitter {
-  private emitter: EventEmitter
-  private name: string
-
-  public constructor(name: string, emitter: EventEmitter) {
-    this.emitter = emitter
-    this.name = name
-  }
   public emit = {
     queued: (id: number) => {
       this.emitter.emit(`${this.name}:${scraperEvents.QUEUED}`, id)
@@ -41,6 +34,13 @@ class ScraperEmitter {
       this.emitter.emit(`${this.name}:${scraperEvents.COMPLETE}`, id)
     }
   }
+  private emitter: EventEmitter
+  private name: string
+
+  public constructor(name: string, emitter: EventEmitter) {
+    this.emitter = emitter
+    this.name = name
+  }
 }
 
 const events = {
@@ -59,10 +59,21 @@ type EmitterEmit = (
 
 class Emitter {
   public emitter: EventEmitter
-  private scrapers: { [scraper: string]: ScraperEmitter } = {}
 
-  private hasListenerFor = (eventName: string): boolean =>
-    this.emitter.listenerCount(eventName) !== 0
+  public emit = {
+    done: () => {
+      this.emitter.emit(events.DONE)
+    },
+    error: (error: Error) => {
+      this.emitter.emit(events.ERROR, error)
+    }
+  }
+  public on = {
+    stop: (callback: () => void) => {
+      this.emitter.on(events.STOP, callback)
+    }
+  }
+  private scrapers: { [scraper: string]: ScraperEmitter } = {}
 
   public constructor(config: Config) {
     this.emitter = new EventEmitter()
@@ -72,25 +83,13 @@ class Emitter {
       this.scrapers[name] = new ScraperEmitter(name, this.emitter)
     }
   }
-
   public scraper = (name: string) => this.scrapers[name]
   public getBoundOn = (): EmitterOn => this.emitter.on.bind(this.emitter)
   public getBoundEmit = (): EmitterEmit => this.emitter.emit.bind(this.emitter)
   public getRxEventStream = (eventName: string) =>
     Rx.fromEvent(this.emitter, eventName)
 
-  public emit = {
-    done: () => {
-      this.emitter.emit(events.DONE)
-    },
-    error: (error: Error) => {
-      this.emitter.emit(events.ERROR, error)
-    }
-  }
-  public on = {
-    stop: (callback: () => void) => {
-      this.emitter.on(events.STOP, callback)
-    }
-  }
+  private hasListenerFor = (eventName: string): boolean =>
+    this.emitter.listenerCount(eventName) !== 0
 }
 export { Emitter }
diff --git a/src/tools/logger.ts b/src/tools/logger.ts
index cc1bfe6..28c0cec 100644
--- a/src/tools/logger.ts
+++ b/src/tools/logger.ts
@@ -12,12 +12,12 @@ const serializers = {
   parsedValuesWithId: (values: ParsedValue[]) => values.map(v => v.parsedValue)
 }
 class Logger {
-  private logger: bunyan
-  private scrapers: { [scraperName: string]: bunyan }
   public debug: typeof bunyan.prototype.debug
   public info: typeof bunyan.prototype.info
   public warn: typeof bunyan.prototype.warn
   public error: typeof bunyan.prototype.error
+  private logger: bunyan
+  private scrapers: { [scraperName: string]: bunyan }
 
   public constructor(options: OptionsInit, flatOptions: FlatOptions) {
     this.logger = bunyan.createLogger({
diff --git a/src/tools/queue/index.ts b/src/tools/queue/index.ts
index 20a2730..55abc60 100644
--- a/src/tools/queue/index.ts
+++ b/src/tools/queue/index.ts
@@ -46,19 +46,6 @@ class Queue {
     this.queuePromise = taskObservable.toPromise()
   }
 
-  private executor = <T>(): Promise<T> => {
-    const taskWithCallback = this.queue.pop()
-    if (!taskWithCallback) {
-      throw new TypeError('queue popped an undefined task.')
-    }
-    return taskWithCallback()
-  }
-
-  private wrapTask = (task: Task, callback: ErrorCallback): Task => () =>
-    task()
-      .then(value => callback(undefined, value))
-      .catch(error => callback(error, undefined))
-
   // returns a promise that resolves or rejects according to the promise passed in
   public add = <T>(task: () => Promise<T>, priority: number): Promise<T> => {
     return new Promise((resolve, reject) => {
@@ -83,5 +70,18 @@ class Queue {
   public toPromise() {
     return this.queuePromise
   }
+
+  private executor = <T>(): Promise<T> => {
+    const taskWithCallback = this.queue.pop()
+    if (!taskWithCallback) {
+      throw new TypeError('queue popped an undefined task.')
+    }
+    return taskWithCallback()
+  }
+
+  private wrapTask = (task: Task, callback: ErrorCallback): Task => () =>
+    task()
+      .then(value => callback(undefined, value))
+      .catch(error => callback(error, undefined))
 }
 export { Queue }
diff --git a/src/tools/queue/priority-queue.ts b/src/tools/queue/priority-queue.ts
index e8de1cd..f3e6fc1 100644
--- a/src/tools/queue/priority-queue.ts
+++ b/src/tools/queue/priority-queue.ts
@@ -4,9 +4,9 @@
  * e.g. priority one is popped before priority zero
  */
 export class PriorityQueue<T = any> {
+  public length = 0
   private priorities: number[] = []
   private queue: { [priority: number]: T[] } = {}
-  public length = 0
 
   // all priorities used in the push function are defined in the constructor
   public constructor(availablePriorities: number[]) {
diff --git a/src/tools/store/index.ts b/src/tools/store/index.ts
index 69facc1..7e8d8f7 100644
--- a/src/tools/store/index.ts
+++ b/src/tools/store/index.ts
@@ -8,10 +8,10 @@ import { Transaction } from 'better-sqlite3'
 import { OptionsInit } from '../../settings/options/types'
 
 class Store {
+  public qs: ReturnType<typeof createStatements>
   private config: Config
   private flatConfig: FlatConfig
   private database: Database
-  public qs: ReturnType<typeof createStatements>
 
   public constructor(config: Config, { folder }: OptionsInit) {
     this.config = config