Replace jshint with eslint

.eslintrc.js

@@ -0,0 +1,43 @@
+"use strict";
+
+module.exports = {
+    "env": {
+        "browser": true,
+        "commonjs": true,
+        "es2021": true,
+        "node": true
+    },
+    "extends": "eslint:recommended",
+    "parserOptions": {
+        "ecmaVersion": "latest"
+    },
+    "ignorePatterns": ["vendor/*.js", "dist/*.js", "test/jquery-1.8.3.min.js"],
+    "rules": {
+        "indent": [
+            "error",
+            4
+        ],
+        "linebreak-style": [
+            "error",
+            "unix"
+        ],
+        "quotes": [
+            "error",
+            "double"
+        ],
+        "semi": [
+            "error",
+            "always"
+        ],
+        "curly": "error",
+        "eqeqeq": "error",
+        "no-new": "error",
+        "no-caller": "error",
+        "guard-for-in": "error",
+        "no-extend-native": "error",
+        "strict": [
+            "error",
+            "global"
+        ],
+    }
+};

Gruntfile.js

@@ -1,67 +1,46 @@
-/*jshint node: true */
 "use strict";
 
 module.exports = function(grunt) {
-  var version = require("./package.json").version;
+    var version = require("./package.json").version;
 
-  grunt.initConfig({
-    jshint: {
-      // see https://github.com/gruntjs/grunt-contrib-jshint/issues/198
-      // we can't override the options using the jshintrc path
-      options: grunt.file.readJSON('.jshintrc'),
-      production: ['./lib/**/*.js'],
-      test: ['./test/helpers/**/*.js', './test/asserts/**/*.js'],
-      documentation: {
-        options: {
-          // we include js files with jekyll, jshint can't see all
-          // variables and we can't declare all of them
-          undef: false,
-          // 'implied' still give false positives in our case
-          strict: false
+    grunt.initConfig({
+        browserify: {
+            all: {
+                files: {
+                    "dist/jszip.js": ["lib/index.js"]
+                },
+                options: {
+                    browserifyOptions: {
+                        standalone: "JSZip",
+                        transform: ["package-json-versionify"],
+                        insertGlobalVars: {
+                            process: undefined,
+                            Buffer: undefined,
+                            __filename: undefined,
+                            __dirname: undefined
+                        },
+                        builtins: false
+                    },
+                    banner: grunt.file.read("lib/license_header.js").replace(/__VERSION__/, version)
+                }
+            }
         },
-        files: {
-          src: ['./documentation/**/*.js']
-        }
-      }
-    },
-    browserify: {
-      all: {
-        files: {
-          'dist/jszip.js': ['lib/index.js']
-        },
-        options: {
-          browserifyOptions: {
-            standalone: 'JSZip',
-            transform: ['package-json-versionify'],
-            insertGlobalVars: {
-              process: undefined,
-              Buffer: undefined,
-              __filename: undefined,
-              __dirname: undefined
+        uglify: {
+            options: {
+                mangle: true,
+                preserveComments: false,
+                banner: grunt.file.read("lib/license_header.js").replace(/__VERSION__/, version)
             },
-            builtins: false
-          },
-          banner: grunt.file.read('lib/license_header.js').replace(/__VERSION__/, version)
+            all: {
+                src: "dist/jszip.js",
+                dest: "dist/jszip.min.js"
+            }
         }
-      }
-    },
-    uglify: {
-      options: {
-        mangle: true,
-        preserveComments: false,
-        banner: grunt.file.read('lib/license_header.js').replace(/__VERSION__/, version)
-      },
-      all: {
-        src: 'dist/jszip.js',
-        dest: 'dist/jszip.min.js'
-      }
-    }
-  });
+    });
 
-  grunt.loadNpmTasks('grunt-browserify');
-  grunt.loadNpmTasks('grunt-contrib-jshint');
-  grunt.loadNpmTasks('grunt-contrib-uglify');
+    grunt.loadNpmTasks("grunt-browserify");
+    grunt.loadNpmTasks("grunt-contrib-uglify");
 
-  grunt.registerTask("build", ["browserify", "uglify"]);
-  grunt.registerTask("default", ["jshint", "build"]);
+    grunt.registerTask("build", ["browserify", "uglify"]);
+    grunt.registerTask("default", ["build"]);
 };

documentation/.eslintrc.js

@@ -0,0 +1,12 @@
+"use strict";
+
+module.exports = {
+    globals: {
+        $: false,
+        jQuery: false,
+        JSZip: false,
+        JSZipUtils: false,
+        // From FileSaver.js
+        saveAs: false,
+    },
+};

documentation/contributing.md

@@ -30,7 +30,7 @@ Here are the interesting build commands :
 * `npm run test-browser` will the tests in some browsers using SauceLabs, see
   below.
 * `npm run test` will run the tests in nodejs and in the browser.
-* `npm run lint` will use jshint the check the source code.
+* `npm run lint` will use eslint the check the source code.
 
 #### Documentation
 

documentation/examples/download-zip-file.inc/blob.js

@@ -1,3 +1,5 @@
+"use strict";
+
 var zip = new JSZip();
 zip.file("Hello.txt", "Hello world\n");
 

documentation/examples/download-zip-file.inc/data_uri.js

@@ -1,3 +1,5 @@
+"use strict";
+
 var zip = new JSZip();
 zip.file("Hello.txt", "Hello world\n");
 

documentation/examples/downloader.inc/downloader.js

@@ -1,8 +1,6 @@
-
-var Promise = window.Promise;
-if (!Promise) {
-    Promise = JSZip.external.Promise;
-}
+"use strict";
+// From helpers.js:
+/* global resetMessage, showMessage, showError, updatePercent */
 
 /**
  * Fetch the content and return the associated promise.
@@ -21,8 +19,7 @@ function urlToPromise(url) {
     });
 }
 
-var $form = $("#download_form").on("submit", function () {
-
+$("#download_form").on("submit", function () {
     resetMessage();
 
     var zip = new JSZip();
@@ -44,15 +41,15 @@ var $form = $("#download_form").on("submit", function () {
         showMessage(msg);
         updatePercent(metadata.percent|0);
     })
-    .then(function callback(blob) {
+        .then(function callback(blob) {
 
-        // see FileSaver.js
-        saveAs(blob, "example.zip");
+            // see FileSaver.js
+            saveAs(blob, "example.zip");
 
-        showMessage("done !");
-    }, function (e) {
-        showError(e);
-    });
+            showMessage("done !");
+        }, function (e) {
+            showError(e);
+        });
 
     return false;
 });

documentation/examples/downloader.inc/helpers.js

@@ -1,20 +1,23 @@
+"use strict";
+
 /**
  * Reset the message.
  */
 function resetMessage () {
     $("#result")
-    .removeClass()
-    .text("");
+        .removeClass()
+        .text("");
 }
 /**
  * show a successful message.
  * @param {String} text the text to show.
  */
+// eslint-disable-next-line no-unused-vars
 function showMessage(text) {
     resetMessage();
     $("#result")
-    .addClass("alert alert-success")
-    .text(text);
+        .addClass("alert alert-success")
+        .text(text);
 }
 /**
  * show an error message.
@@ -23,24 +26,23 @@ function showMessage(text) {
 function showError(text) {
     resetMessage();
     $("#result")
-    .addClass("alert alert-danger")
-    .text(text);
+        .addClass("alert alert-danger")
+        .text(text);
 }
 /**
  * Update the progress bar.
  * @param {Integer} percent the current percent
  */
+// eslint-disable-next-line no-unused-vars
 function updatePercent(percent) {
     $("#progress_bar").removeClass("hide")
-    .find(".progress-bar")
-    .attr("aria-valuenow", percent)
-    .css({
-        width : percent + "%"
-    });
+        .find(".progress-bar")
+        .attr("aria-valuenow", percent)
+        .css({
+            width : percent + "%"
+        });
 }
 
 if(!JSZip.support.blob) {
     showError("This demo works only with a recent browser !");
-    return;
 }
-

documentation/examples/get-binary-files-ajax.inc/fetch_api.js

@@ -1,23 +1,25 @@
-fetch('{{site.baseurl}}/test/ref/text.zip')       // 1) fetch the url
-.then(function (response) {                       // 2) filter on 200 OK
-    if (response.status === 200 || response.status === 0) {
-        return Promise.resolve(response.blob());
-    } else {
-        return Promise.reject(new Error(response.statusText));
-    }
-})
-.then(JSZip.loadAsync)                            // 3) chain with the zip promise
-.then(function (zip) {
-    return zip.file("Hello.txt").async("string"); // 4) chain with the text content promise
-})
-.then(function success(text) {                    // 5) display the result
-    $("#fetch").append($("<p>", {
-        "class": "alert alert-success",
-        text: "loaded, content = " + text
-    }));
-}, function error(e) {
-    $("#fetch").append($("<p>", {
-        "class": "alert alert-danger",
-        text: e
-    }));
-});
+"use strict";
+
+fetch("{{site.baseurl}}/test/ref/text.zip")       // 1) fetch the url
+    .then(function (response) {                       // 2) filter on 200 OK
+        if (response.status === 200 || response.status === 0) {
+            return Promise.resolve(response.blob());
+        } else {
+            return Promise.reject(new Error(response.statusText));
+        }
+    })
+    .then(JSZip.loadAsync)                            // 3) chain with the zip promise
+    .then(function (zip) {
+        return zip.file("Hello.txt").async("string"); // 4) chain with the text content promise
+    })
+    .then(function success(text) {                    // 5) display the result
+        $("#fetch").append($("<p>", {
+            "class": "alert alert-success",
+            text: "loaded, content = " + text
+        }));
+    }, function error(e) {
+        $("#fetch").append($("<p>", {
+            "class": "alert alert-danger",
+            text: e
+        }));
+    });