Update eslint and @typescript-eslint

.ci/template.linux.yml

@@ -1,5 +1,5 @@
 steps:
-  - bash: npm install eslint@5.16.0 typescript@$(TS_VERSION) @typescript-eslint/eslint-plugin@1.13.0 @typescript-eslint/parser@1.13.0 eslint-config-prettier
+  - bash: npm install eslint@$(ESLINT_VERSION) typescript@$(TS_VERSION) @typescript-eslint/eslint-plugin@$(TS_ESLINT_VERSION) @typescript-eslint/parser@$(TS_ESLINT_VERSION) eslint-config-prettier
   - template: ./template.unix.yml
-  - bash: npx eslint **/*.ts --max-warnings=0
+  - bash: npx eslint "**/*.ts" --max-warnings=0
   - template: ./template.common.yml

.ci/template.mac.yml

@@ -1,6 +1,8 @@
 steps:
-  - bash: npm install -g functional-red-black-tree
-  - bash: npm -g install eslint@5.16.0 typescript@$(TS_VERSION) @typescript-eslint/eslint-plugin@1.13.0 @typescript-eslint/parser@1.13.0 eslint-config-prettier
+  - task: NodeTool@0
+    inputs:
+      versionSpec: '10.x'
+  - bash: npm install eslint@$(ESLINT_VERSION) typescript@$(TS_VERSION) @typescript-eslint/eslint-plugin@$(TS_ESLINT_VERSION) @typescript-eslint/parser@$(TS_ESLINT_VERSION) eslint-config-prettier
   - template: ./template.unix.yml
-  - bash: eslint **/*.ts --max-warnings=0
+  - bash: npx eslint "**/*.ts" --max-warnings=0
   - template: ./template.common.yml

.ci/template.windows.yml

@@ -1,8 +1,8 @@
 steps:
-  - bash: npm install eslint@5.16.0 typescript@$(TS_VERSION) @typescript-eslint/eslint-plugin@1.13.0 @typescript-eslint/parser@1.13.0 eslint-config-prettier
+  - bash: npm install eslint@$(ESLINT_VERSION) typescript@$(TS_VERSION) @typescript-eslint/eslint-plugin@$(TS_ESLINT_VERSION) @typescript-eslint/parser@$(TS_ESLINT_VERSION) eslint-config-prettier
   - powershell: iwr https://deno.land/x/install/install.ps1 -out install.ps1; .\install.ps1 $(DENO_VERSION)
   - bash: echo "##vso[task.prependpath]C:\Users\VssAdministrator\.deno\\bin"
-  - bash: npx eslint **/*.ts --max-warnings=0
+  - bash: npx eslint "**/*.ts" --max-warnings=0
   - template: ./template.common.yml
     parameters:
-      exe_suffix: ".exe"
+      exe_suffix: ".exe"

.eslintignore

@@ -0,0 +1,4 @@
+/deno.d.ts
+/prettier/vendor
+**/testdata/
+

.eslintrc.json

@@ -2,7 +2,8 @@
   "root": true,
   "parser": "@typescript-eslint/parser",
   "parserOptions": {
-    "project": "./tsconfig.json"
+    "project": "./tsconfig.json",
+    "createDefaultProgram": true
   },
   "plugins": ["@typescript-eslint"],
   "extends": [
@@ -11,14 +12,16 @@
     "prettier/@typescript-eslint"
   ],
   "rules": {
-    "@typescript-eslint/array-type": ["error", "array-simple"],
+    "@typescript-eslint/array-type": ["error", { "default": "array-simple" }],
     "@typescript-eslint/explicit-member-accessibility": ["off"],
     "@typescript-eslint/no-non-null-assertion": ["off"],
     "@typescript-eslint/no-parameter-properties": ["off"],
     "@typescript-eslint/no-unused-vars": [
       "error",
       { "argsIgnorePattern": "^_", "varsIgnorePattern": "_" }
     ],
+    "@typescript-eslint/ban-ts-ignore": ["off"],
+    "@typescript-eslint/no-empty-function": ["off"],
     "max-len": [
       "error",
       {

archive/tar.ts

@@ -96,7 +96,7 @@ function clean(length: number): Uint8Array {
 }
 
 function pad(num: number, bytes: number, base?: number): string {
-  var numString = num.toString(base || 8);
+  const numString = num.toString(base || 8);
   return "000000000000".substr(numString.length + 12 - bytes) + numString;
 }
 
@@ -328,7 +328,7 @@ export class Tar {
     // set meta data
     const info = opts.filePath && (await Deno.stat(opts.filePath));
 
-    let mode =
+    const mode =
         opts.fileMode || (info && info.mode) || parseInt("777", 8) & 0xfff,
       mtime =
         opts.mtime ||
@@ -385,8 +385,9 @@ export class Tar {
   getReader(): Deno.Reader {
     const readers: Deno.Reader[] = [];
     this.data.forEach((tarData): void => {
-      let { filePath, reader } = tarData,
-        headerArr = formatHeader(tarData);
+      let { reader } = tarData;
+      const { filePath } = tarData;
+      const headerArr = formatHeader(tarData);
       readers.push(new Deno.Buffer(headerArr));
       if (!reader) {
         reader = new FileReader(filePath!);

azure-pipelines.yml

@@ -1,6 +1,8 @@
 variables:
   DENO_VERSION: "v0.19.0"
   TS_VERSION: "3.4.5"
+  ESLINT_VERSION: "6.5.1"
+  TS_ESLINT_VERSION: "2.3.2"
 
 # TODO Try to get eslint to run under Deno, like prettier
 jobs:

bundle/test.ts

@@ -12,6 +12,7 @@ import { instantiate, load, ModuleMetaData } from "./utils.ts";
 /* eslint-disable @typescript-eslint/no-namespace */
 declare global {
   namespace globalThis {
+    // eslint-disable-next-line no-var
     var __results: [string, string] | undefined;
   }
 }

bundle/utils.ts

@@ -23,6 +23,7 @@ type Define = (
 /* eslint-disable @typescript-eslint/no-namespace */
 declare global {
   namespace globalThis {
+    // eslint-disable-next-line no-var
     var define: Define | undefined;
   }
 }

datetime/mod.ts

@@ -118,7 +118,7 @@ export function currentDayOfYear(): number {
  * @return IMF date formated string
  */
 export function toIMF(date: Date): string {
-  function dtPad(v: string, lPad: number = 2): string {
+  function dtPad(v: string, lPad = 2): string {
     return pad(v, lPad, { char: "0" });
   }
   const d = dtPad(date.getUTCDate().toString());

encoding/csv.ts

@@ -56,7 +56,7 @@ async function read(
   const tp = new TextProtoReader(reader);
   let line: string;
   let result: string[] = [];
-  let lineIndex = Startline;
+  const lineIndex = Startline;
 
   const r = await tp.readLine();
   if (r === Deno.EOF) return Deno.EOF;
@@ -229,7 +229,7 @@ export async function parse(
         throw `Error number of fields line:${i}`;
       }
       i++;
-      let out: Record<string, unknown> = {};
+      const out: Record<string, unknown> = {};
       for (let j = 0; j < e.length; j++) {
         const h = headers[j];
         if (h.parse) {

encoding/hex.ts

@@ -85,7 +85,7 @@ export function decode(
   dst: Uint8Array,
   src: Uint8Array
 ): [number, Error | void] {
-  var i = 0;
+  let i = 0;
   for (; i < Math.floor(src.length / 2); i++) {
     const [a, aOK] = fromHexChar(src[i * 2]);
     if (!aOK) {

encoding/toml.ts

@@ -64,8 +64,8 @@ class Parser {
       return line.match(/'''/) ? true : false;
     }
 
-    let merged = [],
-      acc = [],
+    const merged = [];
+    let acc = [],
       isLiteral = false,
       capture = false,
       captureType = "",
@@ -123,14 +123,14 @@ class Parser {
     this.tomlLines = merged;
   }
   _unflat(keys: string[], values: object = {}, cObj: object = {}): object {
-    let out: Record<string, unknown> = {};
+    const out: Record<string, unknown> = {};
     if (keys.length === 0) {
       return cObj;
     } else {
       if (Object.keys(cObj).length === 0) {
         cObj = values;
       }
-      let key: string | undefined = keys.pop();
+      const key: string | undefined = keys.pop();
       if (key) {
         out[key] = cObj;
       }
@@ -152,7 +152,7 @@ class Parser {
     delete this.context.currentGroup;
   }
   _split(str: string): string[] {
-    let out = [];
+    const out = [];
     out.push(...str.split("\n"));
     return out;
   }
@@ -233,8 +233,8 @@ class Parser {
       const reg = /([a-zA-Z0-9-_\.]*) (=)/gi;
       let result;
       while ((result = reg.exec(dataString))) {
-        let ogVal = result[0];
-        let newVal = ogVal
+        const ogVal = result[0];
+        const newVal = ogVal
           .replace(result[1], `"${result[1]}"`)
           .replace(result[2], ":");
         dataString = dataString.replace(ogVal, newVal);
@@ -332,9 +332,9 @@ class Parser {
         }
       }
       if (this._isDeclaration(line)) {
-        let kv = this._processDeclaration(line);
-        let key = kv.key;
-        let value = kv.value;
+        const kv = this._processDeclaration(line);
+        const key = kv.key;
+        const value = kv.value;
         if (!this.context.currentGroup) {
           this.context.output[key] = value;
         } else {
@@ -360,7 +360,7 @@ class Parser {
       let k = keys[i];
       if (k) {
         let v = obj[k];
-        let pathDeclaration = this._parseDeclarationName(k);
+        const pathDeclaration = this._parseDeclarationName(k);
         delete obj[k];
         if (pathDeclaration.length > 1) {
           const shift = pathDeclaration.shift();
@@ -400,7 +400,7 @@ function joinKeys(keys: string[]): string {
 }
 
 class Dumper {
-  maxPad: number = 0;
+  maxPad = 0;
   srcObject: object;
   output: string[] = [];
   constructor(srcObjc: object) {
@@ -507,11 +507,11 @@ class Dumper {
     }
   }
   _dateDeclaration(keys: string[], value: Date): string {
-    function dtPad(v: string, lPad: number = 2): string {
+    function dtPad(v: string, lPad = 2): string {
       return pad(v, lPad, { char: "0" });
     }
-    let m = dtPad((value.getUTCMonth() + 1).toString());
-    let d = dtPad(value.getUTCDate().toString());
+    const m = dtPad((value.getUTCMonth() + 1).toString());
+    const d = dtPad(value.getUTCDate().toString());
     const h = dtPad(value.getUTCHours().toString());
     const min = dtPad(value.getUTCMinutes().toString());
     const s = dtPad(value.getUTCSeconds().toString());

examples/cat.ts

@@ -1,7 +1,7 @@
 // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
 async function cat(filenames: string[]): Promise<void> {
-  for (let filename of filenames) {
-    let file = await Deno.open(filename);
+  for (const filename of filenames) {
+    const file = await Deno.open(filename);
     await Deno.copy(Deno.stdout, file);
     file.close();
   }

examples/gist.ts

@@ -53,11 +53,11 @@ async function main(): Promise<void> {
   });
 
   if (res.ok) {
-    let resObj = await res.json();
+    const resObj = await res.json();
     console.log("Success");
     console.log(resObj["html_url"]);
   } else {
-    let err = await res.text();
+    const err = await res.text();
     console.error("Failure to POST", err);
   }
 }

flags/mod.ts

@@ -286,7 +286,7 @@ export function parse(
         argv._.push(flags.strings["_"] || !isNumber(arg) ? arg : Number(arg));
       }
       if (options.stopEarly) {
-        argv._.push.apply(argv._, args.slice(i + 1));
+        argv._.push(...args.slice(i + 1));
         break;
       }
     }