Add initial eslint setup (#88)

.eslintrc.json

@@ -0,0 +1,16 @@
+{
+  "env": { "node": true, "jest": true },
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": { "ecmaVersion": 2020, "sourceType": "module" },
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/eslint-recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:import/errors",
+    "plugin:import/warnings",
+    "plugin:import/typescript",
+    "plugin:prettier/recommended",
+    "prettier/@typescript-eslint"
+  ],
+  "plugins": ["@typescript-eslint", "jest"]
+}

.github/workflows/workflow.yml

@@ -1,4 +1,5 @@
 name: Tests
+
 on:
   pull_request:
     branches:
@@ -14,9 +15,11 @@ on:
 jobs:
   test:
     name: Test on ${{ matrix.os }}
+
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macOS-latest]
+
     runs-on: ${{ matrix.os }}
 
     steps:
@@ -29,7 +32,12 @@ jobs:
     - run: npm ci
 
     - name: Prettier Format Check
+      if: matrix.os == 'ubuntu-latest'
       run: npm run format-check
 
+    - name: ESLint Check
+      if: matrix.os == 'ubuntu-latest'
+      run: npm run lint
+
     - name: Build & Test
       run: npm run test

__tests__/restore.test.ts

@@ -1,9 +1,7 @@
 import * as core from "@actions/core";
 import * as exec from "@actions/exec";
 import * as io from "@actions/io";
-
 import * as path from "path";
-
 import * as cacheHttpClient from "../src/cacheHttpClient";
 import { Inputs } from "../src/constants";
 import { ArtifactCacheEntry } from "../src/contracts";
@@ -107,7 +105,7 @@ test("restore with no cache found", async () => {
     const stateMock = jest.spyOn(core, "saveState");
 
     const clientMock = jest.spyOn(cacheHttpClient, "getCacheEntry");
-    clientMock.mockImplementation(_ => {
+    clientMock.mockImplementation(() => {
         return Promise.resolve(null);
     });
 
@@ -134,7 +132,7 @@ test("restore with server error should fail", async () => {
     const stateMock = jest.spyOn(core, "saveState");
 
     const clientMock = jest.spyOn(cacheHttpClient, "getCacheEntry");
-    clientMock.mockImplementation(_ => {
+    clientMock.mockImplementation(() => {
         throw new Error("HTTP Error Occurred");
     });
 
@@ -168,7 +166,7 @@ test("restore with restore keys and no cache found", async () => {
     const stateMock = jest.spyOn(core, "saveState");
 
     const clientMock = jest.spyOn(cacheHttpClient, "getCacheEntry");
-    clientMock.mockImplementation(_ => {
+    clientMock.mockImplementation(() => {
         return Promise.resolve(null);
     });
 
@@ -202,7 +200,7 @@ test("restore with cache found", async () => {
         archiveLocation: "www.actionscache.test/download"
     };
     const getCacheMock = jest.spyOn(cacheHttpClient, "getCacheEntry");
-    getCacheMock.mockImplementation(_ => {
+    getCacheMock.mockImplementation(() => {
         return Promise.resolve(cacheEntry);
     });
     const tempPath = "/foo/bar";
@@ -278,7 +276,7 @@ test("restore with cache found for restore key", async () => {
         archiveLocation: "www.actionscache.test/download"
     };
     const getCacheMock = jest.spyOn(cacheHttpClient, "getCacheEntry");
-    getCacheMock.mockImplementation(_ => {
+    getCacheMock.mockImplementation(() => {
         return Promise.resolve(cacheEntry);
     });
     const tempPath = "/foo/bar";

jest.config.js

@@ -1,22 +1,23 @@
-require('nock').disableNetConnect();
+require("nock").disableNetConnect();
 
 module.exports = {
     clearMocks: true,
-  moduleFileExtensions: ['js', 'ts'],
+    moduleFileExtensions: ["js", "ts"],
-  testEnvironment: 'node',
+    testEnvironment: "node",
-  testMatch: ['**/*.test.ts'],
+    testMatch: ["**/*.test.ts"],
-  testRunner: 'jest-circus/runner',
+    testRunner: "jest-circus/runner",
     transform: {
-    '^.+\\.ts$': 'ts-jest'
+        "^.+\\.ts$": "ts-jest"
     },
     verbose: true
-}
+};
 
-const processStdoutWrite = process.stdout.write.bind(process.stdout)
+const processStdoutWrite = process.stdout.write.bind(process.stdout);
+// eslint-disable-next-line @typescript-eslint/explicit-function-return-type
 process.stdout.write = (str, encoding, cb) => {
     // Core library will directly call process.stdout.write for commands
     // We don't want :: commands to be executed by the runner during tests
     if (!str.match(/^::/)) {
         return processStdoutWrite(str, encoding, cb);
     }
-}
+};

package-lock.json

@@ -477,6 +477,12 @@
         "@babel/types": "^7.3.0"
       }
     },
+    "@types/eslint-visitor-keys": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@types/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz",
+      "integrity": "sha512-OCutwjDZ4aFS6PB1UZ988C4YgwlBHJd6wCeQqaLdmadZ/7e+w79+hbMUFC1QXDNCmdyoRfAFdm0RypzwR+Qpag==",
+      "dev": true
+    },
     "@types/istanbul-lib-coverage": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.1.tgz",
@@ -517,6 +523,12 @@
       "integrity": "sha512-yALhelO3i0hqZwhjtcr6dYyaLoCHbAMshwtj6cGxTvHZAKXHsYGdff6E8EPw3xLKY0ELUTQ69Q1rQiJENnccMA==",
       "dev": true
     },
+    "@types/json-schema": {
+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.3.tgz",
+      "integrity": "sha512-Il2DtDVRGDcqjDtE+rF8iqg1CArehSK84HZJCT7AMITlyXRBpuPhqGLDQMowraqqu1coEaimg4ZOqggt6L6L+A==",
+      "dev": true
+    },
     "@types/nock": {
       "version": "11.1.0",
       "resolved": "https://registry.npmjs.org/@types/nock/-/nock-11.1.0.tgz",
@@ -553,6 +565,73 @@
       "integrity": "sha512-SOhuU4wNBxhhTHxYaiG5NY4HBhDIDnJF60GU+2LqHAdKKer86//e4yg69aENCtQ04n0ovz+tq2YPME5t5yp4pw==",
       "dev": true
     },
+    "@typescript-eslint/eslint-plugin": {
+      "version": "2.7.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-2.7.0.tgz",
+      "integrity": "sha512-H5G7yi0b0FgmqaEUpzyBlVh0d9lq4cWG2ap0RKa6BkF3rpBb6IrAoubt1NWh9R2kRs/f0k6XwRDiDz3X/FqXhQ==",
+      "dev": true,
+      "requires": {
+        "@typescript-eslint/experimental-utils": "2.7.0",
+        "eslint-utils": "^1.4.2",
+        "functional-red-black-tree": "^1.0.1",
+        "regexpp": "^2.0.1",
+        "tsutils": "^3.17.1"
+      }
+    },
+    "@typescript-eslint/experimental-utils": {
+      "version": "2.7.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/experimental-utils/-/experimental-utils-2.7.0.tgz",
+      "integrity": "sha512-9/L/OJh2a5G2ltgBWJpHRfGnt61AgDeH6rsdg59BH0naQseSwR7abwHq3D5/op0KYD/zFT4LS5gGvWcMmegTEg==",
+      "dev": true,
+      "requires": {
+        "@types/json-schema": "^7.0.3",
+        "@typescript-eslint/typescript-estree": "2.7.0",
+        "eslint-scope": "^5.0.0"
+      }
+    },
+    "@typescript-eslint/parser": {
+      "version": "2.7.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-2.7.0.tgz",
+      "integrity": "sha512-ctC0g0ZvYclxMh/xI+tyqP0EC2fAo6KicN9Wm2EIao+8OppLfxji7KAGJosQHSGBj3TcqUrA96AjgXuKa5ob2g==",
+      "dev": true,
+      "requires": {
+        "@types/eslint-visitor-keys": "^1.0.0",
+        "@typescript-eslint/experimental-utils": "2.7.0",
+        "@typescript-eslint/typescript-estree": "2.7.0",
+        "eslint-visitor-keys": "^1.1.0"
+      }
+    },
+    "@typescript-eslint/typescript-estree": {
+      "version": "2.7.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-2.7.0.tgz",
+      "integrity": "sha512-vVCE/DY72N4RiJ/2f10PTyYekX2OLaltuSIBqeHYI44GQ940VCYioInIb8jKMrK9u855OEJdFC+HmWAZTnC+Ag==",
+      "dev": true,
+      "requires": {
+        "debug": "^4.1.1",
+        "glob": "^7.1.4",
+        "is-glob": "^4.0.1",
+        "lodash.unescape": "4.0.1",
+        "semver": "^6.3.0",
+        "tsutils": "^3.17.1"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
+          "dev": true
+        }
+      }
+    },
     "@zeit/ncc": {
       "version": "0.20.5",
       "resolved": "https://registry.npmjs.org/@zeit/ncc/-/ncc-0.20.5.tgz",
@@ -589,6 +668,12 @@
         }
       }
     },
+    "acorn-jsx": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-5.1.0.tgz",
+      "integrity": "sha512-tMUqwBWfLFbJbizRmEcWSLw6HnFzfdJs2sOJEOwwtVPMoH/0Ay+E703oZz78VSXZiiDcZrQ5XKjPIUQixhmgVw==",
+      "dev": true
+    },
     "acorn-walk": {
       "version": "6.2.0",
       "resolved": "https://registry.npmjs.org/acorn-walk/-/acorn-walk-6.2.0.tgz",
@@ -638,6 +723,15 @@
         "normalize-path": "^2.1.1"
       }
     },
+    "argparse": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
+      "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
+      "dev": true,
+      "requires": {
+        "sprintf-js": "~1.0.2"
+      }
+    },
     "arr-diff": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-4.0.0.tgz",
@@ -662,6 +756,16 @@
       "integrity": "sha1-jCpe8kcv2ep0KwTHenUJO6J1fJM=",
       "dev": true
     },
+    "array-includes": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/array-includes/-/array-includes-3.0.3.tgz",
+      "integrity": "sha1-GEtI9i2S10UrsxsyMWXH+L0CJm0=",
+      "dev": true,
+      "requires": {
+        "define-properties": "^1.1.2",
+        "es-abstract": "^1.7.0"
+      }
+    },
     "array-unique": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.3.2.tgz",
@@ -978,6 +1082,12 @@
         }
       }
     },
+    "callsites": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
+      "integrity": "sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==",
+      "dev": true
+    },
     "camelcase": {
       "version": "5.3.1",
       "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
@@ -1024,6 +1134,12 @@
         "supports-color": "^5.3.0"
       }
     },
+    "chardet": {
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/chardet/-/chardet-0.7.0.tgz",
+      "integrity": "sha512-mT8iDcrh03qDGRRmoA2hmBJnxpllMR+0/0qlzjqZES6NdiWDcZkCNAk4rPFZ9Q85r27unkiNNg8ZOiwZXBHwcA==",
+      "dev": true
+    },
     "check-error": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.2.tgz",
@@ -1065,6 +1181,21 @@
         }
       }
     },
+    "cli-cursor": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/cli-cursor/-/cli-cursor-3.1.0.tgz",
+      "integrity": "sha512-I/zHAwsKf9FqGoXM4WWRACob9+SNukZTd94DWF57E4toouRulbCxcUh6RKUEOQlYTHJnzkPMySvPNaaSLNfLZw==",
+      "dev": true,
+      "requires": {
+        "restore-cursor": "^3.1.0"
+      }
+    },
+    "cli-width": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/cli-width/-/cli-width-2.2.0.tgz",
+      "integrity": "sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk=",
+      "dev": true
+    },
     "cliui": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.1.0.tgz",
@@ -1158,6 +1289,12 @@
       "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
       "dev": true
     },
+    "contains-path": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/contains-path/-/contains-path-0.1.0.tgz",
+      "integrity": "sha1-/ozxhP9mcLa67wGp1IYaXL7EEgo=",
+      "dev": true
+    },
     "convert-source-map": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-1.6.0.tgz",
@@ -1358,6 +1495,15 @@
       "integrity": "sha512-xLqpez+Zj9GKSnPWS0WZw1igGocZ+uua8+y+5dDNTT934N3QuY1sp2LkHzwiaYQGz60hMq0pjAshdeXm5VUOEw==",
       "dev": true
     },
+    "doctrine": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-3.0.0.tgz",
+      "integrity": "sha512-yS+Q5i3hBf7GBkd4KG8a7eBNNWNGLTaEwwYWUijIYM7zrlYDM0BFXHjjPWlWZ1Rg7UaddZeIDmi9jF3HmqiQ2w==",
+      "dev": true,
+      "requires": {
+        "esutils": "^2.0.2"
+      }
+    },
     "domexception": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/domexception/-/domexception-1.0.1.tgz",
@@ -1377,6 +1523,12 @@
         "safer-buffer": "^2.1.0"
       }
     },
+    "emoji-regex": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
+      "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
+      "dev": true
+    },
     "end-of-stream": {
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.1.tgz",
@@ -1447,6 +1599,267 @@
         }
       }
     },
+    "eslint": {
+      "version": "6.6.0",
+      "resolved": "https://registry.npmjs.org/eslint/-/eslint-6.6.0.tgz",
+      "integrity": "sha512-PpEBq7b6qY/qrOmpYQ/jTMDYfuQMELR4g4WI1M/NaSDDD/bdcMb+dj4Hgks7p41kW2caXsPsEZAEAyAgjVVC0g==",
+      "dev": true,
+      "requires": {
+        "@babel/code-frame": "^7.0.0",
+        "ajv": "^6.10.0",
+        "chalk": "^2.1.0",
+        "cross-spawn": "^6.0.5",
+        "debug": "^4.0.1",
+        "doctrine": "^3.0.0",
+        "eslint-scope": "^5.0.0",
+        "eslint-utils": "^1.4.3",
+        "eslint-visitor-keys": "^1.1.0",
+        "espree": "^6.1.2",
+        "esquery": "^1.0.1",
+        "esutils": "^2.0.2",
+        "file-entry-cache": "^5.0.1",
+        "functional-red-black-tree": "^1.0.1",
+        "glob-parent": "^5.0.0",
+        "globals": "^11.7.0",
+        "ignore": "^4.0.6",
+        "import-fresh": "^3.0.0",
+        "imurmurhash": "^0.1.4",
+        "inquirer": "^7.0.0",
+        "is-glob": "^4.0.0",
+        "js-yaml": "^3.13.1",
+        "json-stable-stringify-without-jsonify": "^1.0.1",
+        "levn": "^0.3.0",
+        "lodash": "^4.17.14",
+        "minimatch": "^3.0.4",
+        "mkdirp": "^0.5.1",
+        "natural-compare": "^1.4.0",
+        "optionator": "^0.8.2",
+        "progress": "^2.0.0",
+        "regexpp": "^2.0.1",
+        "semver": "^6.1.2",
+        "strip-ansi": "^5.2.0",
+        "strip-json-comments": "^3.0.1",
+        "table": "^5.2.3",
+        "text-table": "^0.2.0",
+        "v8-compile-cache": "^2.0.3"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
+          "dev": true
+        }
+      }
+    },
+    "eslint-config-prettier": {
+      "version": "6.5.0",
+      "resolved": "https://registry.npmjs.org/eslint-config-prettier/-/eslint-config-prettier-6.5.0.tgz",
+      "integrity": "sha512-cjXp8SbO9VFGW/Z7mbTydqS9to8Z58E5aYhj3e1+Hx7lS9s6gL5ILKNpCqZAFOVYRcSkWPFYljHrEh8QFEK5EQ==",
+      "dev": true,
+      "requires": {
+        "get-stdin": "^6.0.0"
+      }
+    },
+    "eslint-import-resolver-node": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/eslint-import-resolver-node/-/eslint-import-resolver-node-0.3.2.tgz",
+      "integrity": "sha512-sfmTqJfPSizWu4aymbPr4Iidp5yKm8yDkHp+Ir3YiTHiiDfxh69mOUsmiqW6RZ9zRXFaF64GtYmN7e+8GHBv6Q==",
+      "dev": true,
+      "requires": {
+        "debug": "^2.6.9",
+        "resolve": "^1.5.0"
+      }
+    },
+    "eslint-module-utils": {
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/eslint-module-utils/-/eslint-module-utils-2.4.1.tgz",
+      "integrity": "sha512-H6DOj+ejw7Tesdgbfs4jeS4YMFrT8uI8xwd1gtQqXssaR0EQ26L+2O/w6wkYFy2MymON0fTwHmXBvvfLNZVZEw==",
+      "dev": true,
+      "requires": {
+        "debug": "^2.6.8",
+        "pkg-dir": "^2.0.0"
+      }
+    },
+    "eslint-plugin-import": {
+      "version": "2.18.2",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-import/-/eslint-plugin-import-2.18.2.tgz",
+      "integrity": "sha512-5ohpsHAiUBRNaBWAF08izwUGlbrJoJJ+W9/TBwsGoR1MnlgfwMIKrFeSjWbt6moabiXW9xNvtFz+97KHRfI4HQ==",
+      "dev": true,
+      "requires": {
+        "array-includes": "^3.0.3",
+        "contains-path": "^0.1.0",
+        "debug": "^2.6.9",
+        "doctrine": "1.5.0",
+        "eslint-import-resolver-node": "^0.3.2",
+        "eslint-module-utils": "^2.4.0",
+        "has": "^1.0.3",
+        "minimatch": "^3.0.4",
+        "object.values": "^1.1.0",
+        "read-pkg-up": "^2.0.0",
+        "resolve": "^1.11.0"
+      },
+      "dependencies": {
+        "doctrine": {
+          "version": "1.5.0",
+          "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-1.5.0.tgz",
+          "integrity": "sha1-N53Ocw9hZvds76TmcHoVmwLFpvo=",
+          "dev": true,
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     "typed-rest-client": {
       "version": "1.5.0",
       "resolved": "https://registry.npmjs.org/typed-rest-client/-/typed-rest-client-1.5.0.tgz",
@@ -5195,6 +6104,12 @@
       "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.3.tgz",
       "integrity": "sha512-pW0No1RGHgzlpHJO1nsVrHKpOEIxkGg1xB+v0ZmdNH5OAeAwzAVrCnI2/6Mtx+Uys6iaylxa+D3g4j63IKKjSQ=="
     },
+    "v8-compile-cache": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.1.0.tgz",
+      "integrity": "sha512-usZBT3PW+LOjM25wbqIlZwPeJV+3OSz3M1k1Ws8snlW39dZyYL9lOGC5FgPVHfk0jKmjiDV8Z0mIbVQPiwFs7g==",
+      "dev": true
+    },
     "validate-npm-package-license": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
@@ -5340,6 +6255,15 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
       "dev": true
     },
+    "write": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/write/-/write-1.0.3.tgz",
+      "integrity": "sha512-/lg70HAjtkUgWPVZhZcm+T4hkL8Zbtp1nFNOn3lRrxnlv50SRBv7cR7RqR+GMsd3hUXy9hWBo4CHTbFTcOYwig==",
+      "dev": true,
+      "requires": {
+        "mkdirp": "^0.5.1"
+      }
+    },
     "write-file-atomic": {
       "version": "2.4.1",
       "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.4.1.tgz",

package.json

@@ -7,8 +7,9 @@
   "scripts": {
     "build": "tsc",
     "test": "tsc --noEmit && jest --coverage",
-    "format": "prettier --write **/*.ts",
+    "lint": "eslint '**/*.ts' --cache",
-    "format-check": "prettier --check **/*.ts",
+    "format": "prettier --write '**/*.ts'",
+    "format-check": "prettier --check '**/*.ts'",
     "release": "ncc build -o dist/restore src/restore.ts && ncc build -o dist/save src/save.ts && git add -f dist/"
   },
   "repository": {
@@ -34,7 +35,14 @@
     "@types/nock": "^11.1.0",
     "@types/node": "^12.0.4",
     "@types/uuid": "^3.4.5",
+    "@typescript-eslint/eslint-plugin": "^2.7.0",
+    "@typescript-eslint/parser": "^2.7.0",
     "@zeit/ncc": "^0.20.5",
+    "eslint": "^6.6.0",
+    "eslint-config-prettier": "^6.5.0",
+    "eslint-plugin-import": "^2.18.2",
+    "eslint-plugin-jest": "^23.0.3",
+    "eslint-plugin-prettier": "^3.1.1",
     "jest": "^24.8.0",
     "jest-circus": "^24.7.1",
     "nock": "^11.7.0",

src/cacheHttpClient.ts

@@ -1,13 +1,40 @@
 import * as core from "@actions/core";
 import * as fs from "fs";
-
 import { BearerCredentialHandler } from "typed-rest-client/Handlers";
 import { HttpClient } from "typed-rest-client/HttpClient";
 import { IHttpClientResponse } from "typed-rest-client/Interfaces";
-import { RestClient, IRequestOptions } from "typed-rest-client/RestClient";
+import { IRequestOptions, RestClient } from "typed-rest-client/RestClient";
-
 import { ArtifactCacheEntry } from "./contracts";
 
+function getCacheUrl(): string {
+    // Ideally we just use ACTIONS_CACHE_URL
+    const cacheUrl: string = (
+        process.env["ACTIONS_CACHE_URL"] ||
+        process.env["ACTIONS_RUNTIME_URL"] ||
+        ""
+    ).replace("pipelines", "artifactcache");
+    if (!cacheUrl) {
+        throw new Error(
+            "Cache Service Url not found, unable to restore cache."
+        );
+    }
+
+    core.debug(`Cache Url: ${cacheUrl}`);
+    return cacheUrl;
+}
+
+function createAcceptHeader(type: string, apiVersion: string): string {
+    return `${type};api-version=${apiVersion}`;
+}
+
+function getRequestOptions(): IRequestOptions {
+    const requestOptions: IRequestOptions = {
+        acceptHeader: createAcceptHeader("application/json", "5.2-preview.1")
+    };
+
+    return requestOptions;
+}
+
 export async function getCacheEntry(
     keys: string[]
 ): Promise<ArtifactCacheEntry | null> {
@@ -43,16 +70,6 @@ export async function getCacheEntry(
     return cacheResult;
 }
 
-export async function downloadCache(
-    cacheEntry: ArtifactCacheEntry,
-    archivePath: string
-): Promise<void> {
-    const stream = fs.createWriteStream(archivePath);
-    const httpClient = new HttpClient("actions/cache");
-    const downloadResponse = await httpClient.get(cacheEntry.archiveLocation!);
-    await pipeResponseToStream(downloadResponse, stream);
-}
-
 async function pipeResponseToStream(
     response: IHttpClientResponse,
     stream: NodeJS.WritableStream
@@ -64,7 +81,21 @@ async function pipeResponseToStream(
     });
 }
 
-export async function saveCache(stream: NodeJS.ReadableStream, key: string) {
+export async function downloadCache(
+    cacheEntry: ArtifactCacheEntry,
+    archivePath: string
+): Promise<void> {
+    const stream = fs.createWriteStream(archivePath);
+    const httpClient = new HttpClient("actions/cache");
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    const downloadResponse = await httpClient.get(cacheEntry.archiveLocation!);
+    await pipeResponseToStream(downloadResponse, stream);
+}
+
+export async function saveCache(
+    stream: NodeJS.ReadableStream,
+    key: string
+): Promise<void> {
     const cacheUrl = getCacheUrl();
     const token = process.env["ACTIONS_RUNTIME_TOKEN"] || "";
     const bearerCredentialHandler = new BearerCredentialHandler(token);
@@ -93,32 +124,3 @@ export async function saveCache(stream: NodeJS.ReadableStream, key: string) {
 
     core.info("Cache saved successfully");
 }
-
-function getRequestOptions(): IRequestOptions {
-    const requestOptions: IRequestOptions = {
-        acceptHeader: createAcceptHeader("application/json", "5.2-preview.1")
-    };
-
-    return requestOptions;
-}
-
-function createAcceptHeader(type: string, apiVersion: string): string {
-    return `${type};api-version=${apiVersion}`;
-}
-
-function getCacheUrl(): string {
-    // Ideally we just use ACTIONS_CACHE_URL
-    let cacheUrl: string = (
-        process.env["ACTIONS_CACHE_URL"] ||
-        process.env["ACTIONS_RUNTIME_URL"] ||
-        ""
-    ).replace("pipelines", "artifactcache");
-    if (!cacheUrl) {
-        throw new Error(
-            "Cache Service Url not found, unable to restore cache."
-        );
-    }
-
-    core.debug(`Cache Url: ${cacheUrl}`);
-    return cacheUrl;
-}

src/constants.ts

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-namespace */
 export namespace Inputs {
     export const Key = "key";
     export const Path = "path";

src/restore.ts

@@ -1,14 +1,12 @@
 import * as core from "@actions/core";
 import { exec } from "@actions/exec";
 import * as io from "@actions/io";
-
 import * as path from "path";
-
 import * as cacheHttpClient from "./cacheHttpClient";
 import { Inputs, State } from "./constants";
 import * as utils from "./utils/actionUtils";
 
-async function run() {
+async function run(): Promise<void> {
     try {
         // Validate inputs, this can cause task failure
         let cachePath = utils.resolvePath(

src/save.ts

@@ -1,15 +1,13 @@
 import * as core from "@actions/core";
 import { exec } from "@actions/exec";
-
 import * as io from "@actions/io";
 import * as fs from "fs";
 import * as path from "path";
-
 import * as cacheHttpClient from "./cacheHttpClient";
 import { Inputs, State } from "./constants";
 import * as utils from "./utils/actionUtils";
 
-async function run() {
+async function run(): Promise<void> {
     try {
         const state = utils.getCacheState();
 

src/utils/actionUtils.ts

@@ -4,7 +4,6 @@ import * as fs from "fs";
 import * as os from "os";
 import * as path from "path";
 import * as uuidV4 from "uuid/v4";
-
 import { Outputs, State } from "../constants";
 import { ArtifactCacheEntry } from "../contracts";
 
@@ -50,10 +49,18 @@ export function isExactKeyMatch(
     );
 }
 
+export function setCacheState(state: ArtifactCacheEntry): void {
+    core.saveState(State.CacheResult, JSON.stringify(state));
+}
+
+export function setCacheHitOutput(isCacheHit: boolean): void {
+    core.setOutput(Outputs.CacheHit, isCacheHit.toString());
+}
+
 export function setOutputAndState(
     key: string,
     cacheResult?: ArtifactCacheEntry
-) {
+): void {
     setCacheHitOutput(isExactKeyMatch(key, cacheResult));
     // Store the cache result if it exists
     cacheResult && setCacheState(cacheResult);
@@ -65,14 +72,6 @@ export function getCacheState(): ArtifactCacheEntry | undefined {
     return (stateData && JSON.parse(stateData)) as ArtifactCacheEntry;
 }
 
-export function setCacheState(state: ArtifactCacheEntry) {
-    core.saveState(State.CacheResult, JSON.stringify(state));
-}
-
-export function setCacheHitOutput(isCacheHit: boolean) {
-    core.setOutput(Outputs.CacheHit, isCacheHit.toString());
-}
-
 export function resolvePath(filePath: string): string {
     if (filePath[0] === "~") {
         const home = os.homedir();

src/utils/testUtils.ts

@@ -5,7 +5,7 @@ function getInputName(name: string): string {
     return `INPUT_${name.replace(/ /g, "_").toUpperCase()}`;
 }
 
-export function setInput(name: string, value: string) {
+export function setInput(name: string, value: string): void {
     process.env[getInputName(name)] = value;
 }
 
@@ -15,14 +15,14 @@ interface CacheInput {
     restoreKeys?: string[];
 }
 
-export function setInputs(input: CacheInput) {
+export function setInputs(input: CacheInput): void {
     setInput(Inputs.Path, input.path);
     setInput(Inputs.Key, input.key);
     input.restoreKeys &&
         setInput(Inputs.RestoreKeys, input.restoreKeys.join("\n"));
 }
 
-export function clearInputs() {
+export function clearInputs(): void {
     delete process.env[getInputName(Inputs.Path)];
     delete process.env[getInputName(Inputs.Key)];
     delete process.env[getInputName(Inputs.RestoreKeys)];