A code snippet to demonstrate the new preferences code hints feature of Brackets.io

main.js

define(function (require, module, exports) {
    var PreferencesManager = brackets.getModule("preferences/PreferencesManager"),
        prefs              = PreferencesManager.getExtensionPrefs("TestExt");
    
    // Boolean
    prefs.definePreference("one", "boolean", true, {
        excludeFromHints: true // This won't show up in the code hints.
    });
    
    // Boolean Preference that will show up in code hints
    prefs.definePreference("foo", "boolean", true, {
       description: "This is a boolean preference" 
    });

    PreferencesManager.definePreference("testPref", "boolean", true);

    // Number
    prefs.definePreference("two", "number", 4, {
        description: "This is a number Preference",
        values: [1, 2, 3, 5]
    });
    
    // String
    prefs.definePreference("three", "string", "foo", {
        description: "This is a string Preference",
        values: ["foo", "bar", "baz"]
    });
    
    // Array
    prefs.definePreference("four", "array", ["foo"], {
        description: "This is an array of strings",
        valueType: "string",
        values: ["foo", "bar", "baz"]
    });
    
    // Object
    prefs.definePreference("five", "object", {}, {
        description: "This is an object",
        keys: {
            fiveA: {
                type: "boolean",
                description: "This is a nested boolean Preference"
            },
            fiveB: {
                type: "boolean",
                description: "This is also a nested boolean Preference"
            },
            fiveC: {
                type: "number",
                description: "This is a nested number Preference",
                values: [2, 4, 6, 8, 10]
            },
            fiveD: {
                type: "string",
                description: "This is a string Preference",
                values: ["foo", "bar", "baz"]
            },
            fiveE: {
                type: "array",
                description: "This is an array of numbers",
                values: [1, 2, 3, 4, 5, 6],
                valueType: "number"
            },
            fiveF: {
                type: "array",
                description: "This is an array of strings",
                values: ["foo", "bar", "baz"],
                valueType: "string"
            }
        }
    });
});