Gecko [ gandhischool.edu.np ]

Name	Size	Permission
utils	[ DIR ]	dr-xr-xr-x
accessor-pairs.js	11.71 KB	-rw-rw-rw-
array-bracket-newline.js	9.45 KB	-rw-rw-rw-
array-bracket-spacing.js	8.96 KB	-rw-rw-rw-
array-callback-return.js	15.5 KB	-rw-rw-rw-
array-element-newline.js	10.9 KB	-rw-rw-rw-
arrow-body-style.js	12.67 KB	-rw-rw-rw-
arrow-parens.js	7.61 KB	-rw-rw-rw-
arrow-spacing.js	5.17 KB	-rw-rw-rw-
block-scoped-var.js	4.24 KB	-rw-rw-rw-
block-spacing.js	5.8 KB	-rw-rw-rw-
brace-style.js	8.04 KB	-rw-rw-rw-
callback-return.js	6.41 KB	-rw-rw-rw-
camelcase.js	13.66 KB	-rw-rw-rw-
capitalized-comments.js	10.48 KB	-rw-rw-rw-
class-methods-use-this.js	6.02 KB	-rw-rw-rw-
comma-dangle.js	13.53 KB	-rw-rw-rw-
comma-spacing.js	6.87 KB	-rw-rw-rw-
comma-style.js	11.72 KB	-rw-rw-rw-
complexity.js	5.6 KB	-rw-rw-rw-
computed-property-spacing.js	7.45 KB	-rw-rw-rw-
consistent-return.js	6.91 KB	-rw-rw-rw-
consistent-this.js	4.99 KB	-rw-rw-rw-
constructor-super.js	15.19 KB	-rw-rw-rw-
curly.js	18.93 KB	-rw-rw-rw-
default-case-last.js	1.21 KB	-rw-rw-rw-
default-case.js	2.77 KB	-rw-rw-rw-
default-param-last.js	1.55 KB	-rw-rw-rw-
dot-location.js	3.43 KB	-rw-rw-rw-
dot-notation.js	6.6 KB	-rw-rw-rw-
eol-last.js	4.01 KB	-rw-rw-rw-
eqeqeq.js	5.65 KB	-rw-rw-rw-
for-direction.js	5 KB	-rw-rw-rw-
func-call-spacing.js	9.77 KB	-rw-rw-rw-
func-name-matching.js	9.91 KB	-rw-rw-rw-
func-names.js	6.3 KB	-rw-rw-rw-
func-style.js	2.85 KB	-rw-rw-rw-
function-call-argument-newline...	4.31 KB	-rw-rw-rw-
function-paren-newline.js	11.61 KB	-rw-rw-rw-
generator-star-spacing.js	7.01 KB	-rw-rw-rw-
getter-return.js	6.87 KB	-rw-rw-rw-
global-require.js	2.44 KB	-rw-rw-rw-
grouped-accessor-pairs.js	7.46 KB	-rw-rw-rw-
guard-for-in.js	2.31 KB	-rw-rw-rw-
handle-callback-err.js	3.06 KB	-rw-rw-rw-
id-blacklist.js	7.54 KB	-rw-rw-rw-
id-denylist.js	7.04 KB	-rw-rw-rw-
id-length.js	6.51 KB	-rw-rw-rw-
id-match.js	11.04 KB	-rw-rw-rw-
implicit-arrow-linebreak.js	2.88 KB	-rw-rw-rw-
indent-legacy.js	43.59 KB	-rw-rw-rw-
indent.js	76.54 KB	-rw-rw-rw-
index.js	17.89 KB	-rw-rw-rw-
init-declarations.js	4.38 KB	-rw-rw-rw-
jsx-quotes.js	2.98 KB	-rw-rw-rw-
key-spacing.js	26.36 KB	-rw-rw-rw-
keyword-spacing.js	23.7 KB	-rw-rw-rw-
line-comment-position.js	4.09 KB	-rw-rw-rw-
linebreak-style.js	3.48 KB	-rw-rw-rw-
lines-around-comment.js	17.85 KB	-rw-rw-rw-
lines-around-directive.js	7.6 KB	-rw-rw-rw-
lines-between-class-members.js	11.15 KB	-rw-rw-rw-
logical-assignment-operators.j...	21.38 KB	-rw-rw-rw-
max-classes-per-file.js	2.58 KB	-rw-rw-rw-
max-depth.js	4.68 KB	-rw-rw-rw-
max-len.js	15.81 KB	-rw-rw-rw-
max-lines-per-function.js	6.92 KB	-rw-rw-rw-
max-lines.js	5.95 KB	-rw-rw-rw-
max-nested-callbacks.js	3.48 KB	-rw-rw-rw-
max-params.js	3.1 KB	-rw-rw-rw-
max-statements-per-line.js	7.35 KB	-rw-rw-rw-
max-statements.js	5.81 KB	-rw-rw-rw-
multiline-comment-style.js	21.22 KB	-rw-rw-rw-
multiline-ternary.js	7.62 KB	-rw-rw-rw-
new-cap.js	9.3 KB	-rw-rw-rw-
new-parens.js	3.19 KB	-rw-rw-rw-
newline-after-var.js	9.46 KB	-rw-rw-rw-
newline-before-return.js	7.87 KB	-rw-rw-rw-
newline-per-chained-call.js	4.04 KB	-rw-rw-rw-
no-alert.js	4.25 KB	-rw-rw-rw-
no-array-constructor.js	4.38 KB	-rw-rw-rw-
no-async-promise-executor.js	1.11 KB	-rw-rw-rw-
no-await-in-loop.js	2.73 KB	-rw-rw-rw-
no-bitwise.js	3.5 KB	-rw-rw-rw-
no-buffer-constructor.js	1.4 KB	-rw-rw-rw-
no-caller.js	1.18 KB	-rw-rw-rw-
no-case-declarations.js	1.83 KB	-rw-rw-rw-
no-catch-shadow.js	2.51 KB	-rw-rw-rw-
no-class-assign.js	1.73 KB	-rw-rw-rw-
no-compare-neg-zero.js	1.9 KB	-rw-rw-rw-
no-cond-assign.js	5.52 KB	-rw-rw-rw-
no-confusing-arrow.js	2.9 KB	-rw-rw-rw-
no-console.js	7.17 KB	-rw-rw-rw-
no-const-assign.js	1.52 KB	-rw-rw-rw-
no-constant-binary-expression....	20.41 KB	-rw-rw-rw-
no-constant-condition.js	4.77 KB	-rw-rw-rw-
no-constructor-return.js	1.57 KB	-rw-rw-rw-
no-continue.js	886 B	-rw-rw-rw-
no-control-regex.js	4.58 KB	-rw-rw-rw-
no-debugger.js	959 B	-rw-rw-rw-
no-delete-var.js	983 B	-rw-rw-rw-
no-div-regex.js	1.42 KB	-rw-rw-rw-
no-dupe-args.js	2.36 KB	-rw-rw-rw-
no-dupe-class-members.js	3.29 KB	-rw-rw-rw-
no-dupe-else-if.js	4.51 KB	-rw-rw-rw-
no-dupe-keys.js	3.88 KB	-rw-rw-rw-
no-duplicate-case.js	2.04 KB	-rw-rw-rw-
no-duplicate-imports.js	9.28 KB	-rw-rw-rw-
no-else-return.js	15.71 KB	-rw-rw-rw-
no-empty-character-class.js	2.23 KB	-rw-rw-rw-
no-empty-function.js	4.63 KB	-rw-rw-rw-
no-empty-pattern.js	2.38 KB	-rw-rw-rw-
no-empty-static-block.js	1.22 KB	-rw-rw-rw-
no-empty.js	3.08 KB	-rw-rw-rw-
no-eq-null.js	1.22 KB	-rw-rw-rw-
no-eval.js	9.34 KB	-rw-rw-rw-
no-ex-assign.js	1.43 KB	-rw-rw-rw-
no-extend-native.js	6.5 KB	-rw-rw-rw-
no-extra-bind.js	7.39 KB	-rw-rw-rw-
no-extra-boolean-cast.js	11.7 KB	-rw-rw-rw-
no-extra-label.js	5.04 KB	-rw-rw-rw-
no-extra-parens.js	52.03 KB	-rw-rw-rw-
no-extra-semi.js	4.99 KB	-rw-rw-rw-
no-fallthrough.js	6.89 KB	-rw-rw-rw-
no-floating-decimal.js	2.42 KB	-rw-rw-rw-
no-func-assign.js	2.2 KB	-rw-rw-rw-
no-global-assign.js	2.97 KB	-rw-rw-rw-
no-implicit-coercion.js	12.97 KB	-rw-rw-rw-
no-implicit-globals.js	5.48 KB	-rw-rw-rw-
no-implied-eval.js	4.54 KB	-rw-rw-rw-
no-import-assign.js	7.25 KB	-rw-rw-rw-
no-inline-comments.js	3.29 KB	-rw-rw-rw-
no-inner-declarations.js	2.96 KB	-rw-rw-rw-
no-invalid-regexp.js	6.3 KB	-rw-rw-rw-
no-invalid-this.js	5.01 KB	-rw-rw-rw-
no-irregular-whitespace.js	9.93 KB	-rw-rw-rw-
no-iterator.js	1.28 KB	-rw-rw-rw-
no-label-var.js	2.36 KB	-rw-rw-rw-
no-labels.js	4.38 KB	-rw-rw-rw-
no-lone-blocks.js	4.23 KB	-rw-rw-rw-
no-lonely-if.js	3.65 KB	-rw-rw-rw-
no-loop-func.js	6.16 KB	-rw-rw-rw-
no-loss-of-precision.js	8.07 KB	-rw-rw-rw-
no-magic-numbers.js	9.26 KB	-rw-rw-rw-
no-misleading-character-class....	9.87 KB	-rw-rw-rw-
no-mixed-operators.js	7.58 KB	-rw-rw-rw-
no-mixed-requires.js	7.26 KB	-rw-rw-rw-
no-mixed-spaces-and-tabs.js	3.67 KB	-rw-rw-rw-
no-multi-assign.js	1.76 KB	-rw-rw-rw-
no-multi-spaces.js	5.04 KB	-rw-rw-rw-
no-multi-str.js	1.8 KB	-rw-rw-rw-
no-multiple-empty-lines.js	6.25 KB	-rw-rw-rw-
no-native-reassign.js	2.99 KB	-rw-rw-rw-
no-negated-condition.js	2.9 KB	-rw-rw-rw-
no-negated-in-lhs.js	1.16 KB	-rw-rw-rw-
no-nested-ternary.js	1.12 KB	-rw-rw-rw-
no-new-func.js	2.98 KB	-rw-rw-rw-
no-new-native-nonconstructor.j...	2.11 KB	-rw-rw-rw-
no-new-object.js	1.72 KB	-rw-rw-rw-
no-new-require.js	1.17 KB	-rw-rw-rw-
no-new-symbol.js	1.58 KB	-rw-rw-rw-
no-new-wrappers.js	1.7 KB	-rw-rw-rw-
no-new.js	1.04 KB	-rw-rw-rw-
no-nonoctal-decimal-escape.js	5.47 KB	-rw-rw-rw-
no-obj-calls.js	2.7 KB	-rw-rw-rw-
no-object-constructor.js	3.55 KB	-rw-rw-rw-
no-octal-escape.js	1.44 KB	-rw-rw-rw-
no-octal.js	1.01 KB	-rw-rw-rw-
no-param-reassign.js	8.42 KB	-rw-rw-rw-
no-path-concat.js	1.68 KB	-rw-rw-rw-
no-plusplus.js	3.1 KB	-rw-rw-rw-
no-process-env.js	1.19 KB	-rw-rw-rw-
no-process-exit.js	1.24 KB	-rw-rw-rw-
no-promise-executor-return.js	8.54 KB	-rw-rw-rw-
no-proto.js	1.21 KB	-rw-rw-rw-
no-prototype-builtins.js	5.83 KB	-rw-rw-rw-
no-redeclare.js	5.67 KB	-rw-rw-rw-
no-regex-spaces.js	6.42 KB	-rw-rw-rw-
no-restricted-exports.js	7.1 KB	-rw-rw-rw-
no-restricted-globals.js	3.79 KB	-rw-rw-rw-
no-restricted-imports.js	16.6 KB	-rw-rw-rw-
no-restricted-modules.js	6.9 KB	-rw-rw-rw-
no-restricted-properties.js	6.17 KB	-rw-rw-rw-
no-restricted-syntax.js	2.17 KB	-rw-rw-rw-
no-return-assign.js	2.62 KB	-rw-rw-rw-
no-return-await.js	5.02 KB	-rw-rw-rw-
no-script-url.js	1.72 KB	-rw-rw-rw-
no-self-assign.js	5.5 KB	-rw-rw-rw-
no-self-compare.js	1.81 KB	-rw-rw-rw-
no-sequences.js	4.67 KB	-rw-rw-rw-
no-setter-return.js	7.07 KB	-rw-rw-rw-
no-shadow-restricted-names.js	2.16 KB	-rw-rw-rw-
no-shadow.js	12.31 KB	-rw-rw-rw-
no-spaced-func.js	2.42 KB	-rw-rw-rw-
no-sparse-arrays.js	1.17 KB	-rw-rw-rw-
no-sync.js	1.65 KB	-rw-rw-rw-
no-tabs.js	2.45 KB	-rw-rw-rw-
no-template-curly-in-string.js	1.15 KB	-rw-rw-rw-
no-ternary.js	889 B	-rw-rw-rw-
no-this-before-super.js	10.87 KB	-rw-rw-rw-
no-throw-literal.js	1.28 KB	-rw-rw-rw-
no-trailing-spaces.js	6.72 KB	-rw-rw-rw-
no-undef-init.js	2.35 KB	-rw-rw-rw-
no-undef.js	2.3 KB	-rw-rw-rw-
no-undefined.js	2.24 KB	-rw-rw-rw-
no-underscore-dangle.js	12.79 KB	-rw-rw-rw-
no-unexpected-multiline.js	4.19 KB	-rw-rw-rw-
no-unmodified-loop-condition.j...	11.65 KB	-rw-rw-rw-
no-unneeded-ternary.js	6.79 KB	-rw-rw-rw-
no-unreachable-loop.js	5.94 KB	-rw-rw-rw-
no-unreachable.js	8.9 KB	-rw-rw-rw-
no-unsafe-finally.js	3.91 KB	-rw-rw-rw-
no-unsafe-negation.js	4.63 KB	-rw-rw-rw-
no-unsafe-optional-chaining.js	6.97 KB	-rw-rw-rw-
no-unused-expressions.js	6.08 KB	-rw-rw-rw-
no-unused-labels.js	4.55 KB	-rw-rw-rw-
no-unused-private-class-member...	7.68 KB	-rw-rw-rw-
no-unused-vars.js	27 KB	-rw-rw-rw-
no-use-before-define.js	10.88 KB	-rw-rw-rw-
no-useless-backreference.js	7.57 KB	-rw-rw-rw-
no-useless-call.js	2.99 KB	-rw-rw-rw-
no-useless-catch.js	1.71 KB	-rw-rw-rw-
no-useless-computed-key.js	6.3 KB	-rw-rw-rw-
no-useless-concat.js	3.24 KB	-rw-rw-rw-
no-useless-constructor.js	5.75 KB	-rw-rw-rw-
no-useless-escape.js	13.18 KB	-rw-rw-rw-
no-useless-rename.js	5.88 KB	-rw-rw-rw-
no-useless-return.js	14.01 KB	-rw-rw-rw-
no-var.js	12.14 KB	-rw-rw-rw-
no-void.js	1.72 KB	-rw-rw-rw-
no-warning-comments.js	7.12 KB	-rw-rw-rw-
no-whitespace-before-property....	3.92 KB	-rw-rw-rw-
no-with.js	876 B	-rw-rw-rw-
nonblock-statement-body-positi...	4.56 KB	-rw-rw-rw-
object-curly-newline.js	11.53 KB	-rw-rw-rw-
object-curly-spacing.js	11.61 KB	-rw-rw-rw-
object-property-newline.js	3.8 KB	-rw-rw-rw-
object-shorthand.js	21.78 KB	-rw-rw-rw-
one-var-declaration-per-line.j...	2.86 KB	-rw-rw-rw-
one-var.js	22.37 KB	-rw-rw-rw-
operator-assignment.js	8.58 KB	-rw-rw-rw-
operator-linebreak.js	9.88 KB	-rw-rw-rw-
padded-blocks.js	10.79 KB	-rw-rw-rw-
padding-line-between-statement...	18.85 KB	-rw-rw-rw-
prefer-arrow-callback.js	14.33 KB	-rw-rw-rw-
prefer-const.js	18.27 KB	-rw-rw-rw-
prefer-destructuring.js	10.93 KB	-rw-rw-rw-
prefer-exponentiation-operator...	7.58 KB	-rw-rw-rw-
prefer-named-capture-group.js	5.84 KB	-rw-rw-rw-
prefer-numeric-literals.js	5.7 KB	-rw-rw-rw-
prefer-object-has-own.js	4.24 KB	-rw-rw-rw-
prefer-object-spread.js	10.45 KB	-rw-rw-rw-
prefer-promise-reject-errors.j...	5.37 KB	-rw-rw-rw-
prefer-reflect.js	4.59 KB	-rw-rw-rw-
prefer-regex-literals.js	18.06 KB	-rw-rw-rw-
prefer-rest-params.js	3.39 KB	-rw-rw-rw-
prefer-spread.js	2.78 KB	-rw-rw-rw-
prefer-template.js	11.15 KB	-rw-rw-rw-
quote-props.js	11.82 KB	-rw-rw-rw-
quotes.js	12.41 KB	-rw-rw-rw-
radix.js	6.75 KB	-rw-rw-rw-
require-atomic-updates.js	11.1 KB	-rw-rw-rw-
require-await.js	3.27 KB	-rw-rw-rw-
require-jsdoc.js	3.77 KB	-rw-rw-rw-
require-unicode-regexp.js	5.1 KB	-rw-rw-rw-
require-yield.js	2.05 KB	-rw-rw-rw-
rest-spread-spacing.js	4.03 KB	-rw-rw-rw-
semi-spacing.js	8.71 KB	-rw-rw-rw-
semi-style.js	5.24 KB	-rw-rw-rw-
semi.js	15.87 KB	-rw-rw-rw-
sort-imports.js	10.62 KB	-rw-rw-rw-
sort-keys.js	7.16 KB	-rw-rw-rw-
sort-vars.js	4.04 KB	-rw-rw-rw-
space-before-blocks.js	7.14 KB	-rw-rw-rw-
space-before-function-paren.js	5.87 KB	-rw-rw-rw-
space-in-parens.js	10.55 KB	-rw-rw-rw-
space-infix-ops.js	6.42 KB	-rw-rw-rw-
space-unary-ops.js	12.39 KB	-rw-rw-rw-
spaced-comment.js	12.85 KB	-rw-rw-rw-
strict.js	10.37 KB	-rw-rw-rw-
switch-colon-spacing.js	4.9 KB	-rw-rw-rw-
symbol-description.js	2.04 KB	-rw-rw-rw-
template-curly-spacing.js	4.74 KB	-rw-rw-rw-
template-tag-spacing.js	3.08 KB	-rw-rw-rw-
unicode-bom.js	2.15 KB	-rw-rw-rw-
use-isnan.js	4.64 KB	-rw-rw-rw-
valid-jsdoc.js	20.08 KB	-rw-rw-rw-
valid-typeof.js	4.92 KB	-rw-rw-rw-
vars-on-top.js	5.17 KB	-rw-rw-rw-
wrap-iife.js	7.8 KB	-rw-rw-rw-
wrap-regex.js	1.85 KB	-rw-rw-rw-
yield-star-spacing.js	4.31 KB	-rw-rw-rw-
yoda.js	11.89 KB	-rw-rw-rw-

Code Editor : key-spacing.js

/**
 * @fileoverview Rule to specify spacing of object literal keys and values
 * @author Brandon Mills
 * @deprecated in ESLint v8.53.0
 */
"use strict";

//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------

const astUtils = require("./utils/ast-utils");
const { getGraphemeCount } = require("../shared/string-utils");

/**
 * Checks whether a string contains a line terminator as defined in
 * http://www.ecma-international.org/ecma-262/5.1/#sec-7.3
 * @param {string} str String to test.
 * @returns {boolean} True if str contains a line terminator.
 */
function containsLineTerminator(str) {
    return astUtils.LINEBREAK_MATCHER.test(str);
}

/**
 * Gets the last element of an array.
 * @param {Array} arr An array.
 * @returns {any} Last element of arr.
 */
function last(arr) {
    return arr[arr.length - 1];
}

/**
 * Checks whether a node is contained on a single line.
 * @param {ASTNode} node AST Node being evaluated.
 * @returns {boolean} True if the node is a single line.
 */
function isSingleLine(node) {
    return (node.loc.end.line === node.loc.start.line);
}

/**
 * Checks whether the properties on a single line.
 * @param {ASTNode[]} properties List of Property AST nodes.
 * @returns {boolean} True if all properties is on a single line.
 */
function isSingleLineProperties(properties) {
    const [firstProp] = properties,
        lastProp = last(properties);

return firstProp.loc.start.line === lastProp.loc.end.line;
}

/**
 * Initializes a single option property from the configuration with defaults for undefined values
 * @param {Object} toOptions Object to be initialized
 * @param {Object} fromOptions Object to be initialized from
 * @returns {Object} The object with correctly initialized options and values
 */
function initOptionProperty(toOptions, fromOptions) {
    toOptions.mode = fromOptions.mode || "strict";

// Set value of beforeColon
    if (typeof fromOptions.beforeColon !== "undefined") {
        toOptions.beforeColon = +fromOptions.beforeColon;
    } else {
        toOptions.beforeColon = 0;
    }

// Set value of afterColon
    if (typeof fromOptions.afterColon !== "undefined") {
        toOptions.afterColon = +fromOptions.afterColon;
    } else {
        toOptions.afterColon = 1;
    }

// Set align if exists
    if (typeof fromOptions.align !== "undefined") {
        if (typeof fromOptions.align === "object") {
            toOptions.align = fromOptions.align;
        } else { // "string"
            toOptions.align = {
                on: fromOptions.align,
                mode: toOptions.mode,
                beforeColon: toOptions.beforeColon,
                afterColon: toOptions.afterColon
            };
        }
    }

return toOptions;
}

/**
 * Initializes all the option values (singleLine, multiLine and align) from the configuration with defaults for undefined values
 * @param {Object} toOptions Object to be initialized
 * @param {Object} fromOptions Object to be initialized from
 * @returns {Object} The object with correctly initialized options and values
 */
function initOptions(toOptions, fromOptions) {
    if (typeof fromOptions.align === "object") {

// Initialize the alignment configuration
        toOptions.align = initOptionProperty({}, fromOptions.align);
        toOptions.align.on = fromOptions.align.on || "colon";
        toOptions.align.mode = fromOptions.align.mode || "strict";

toOptions.multiLine = initOptionProperty({}, (fromOptions.multiLine || fromOptions));
        toOptions.singleLine = initOptionProperty({}, (fromOptions.singleLine || fromOptions));

} else { // string or undefined
        toOptions.multiLine = initOptionProperty({}, (fromOptions.multiLine || fromOptions));
        toOptions.singleLine = initOptionProperty({}, (fromOptions.singleLine || fromOptions));

// If alignment options are defined in multiLine, pull them out into the general align configuration
        if (toOptions.multiLine.align) {
            toOptions.align = {
                on: toOptions.multiLine.align.on,
                mode: toOptions.multiLine.align.mode || toOptions.multiLine.mode,
                beforeColon: toOptions.multiLine.align.beforeColon,
                afterColon: toOptions.multiLine.align.afterColon
            };
        }
    }

return toOptions;
}

//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------

/** @type {import('../shared/types').Rule} */
module.exports = {
    meta: {
        deprecated: true,
        replacedBy: [],
        type: "layout",

docs: {
            description: "Enforce consistent spacing between keys and values in object literal properties",
            recommended: false,
            url: "https://eslint.org/docs/latest/rules/key-spacing"
        },

fixable: "whitespace",

schema: [{
            anyOf: [
                {
                    type: "object",
                    properties: {
                        align: {
                            anyOf: [
                                {
                                    enum: ["colon", "value"]
                                },
                                {
                                    type: "object",
                                    properties: {
                                        mode: {
                                            enum: ["strict", "minimum"]
                                        },
                                        on: {
                                            enum: ["colon", "value"]
                                        },
                                        beforeColon: {
                                            type: "boolean"
                                        },
                                        afterColon: {
                                            type: "boolean"
                                        }
                                    },
                                    additionalProperties: false
                                }
                            ]
                        },
                        mode: {
                            enum: ["strict", "minimum"]
                        },
                        beforeColon: {
                            type: "boolean"
                        },
                        afterColon: {
                            type: "boolean"
                        }
                    },
                    additionalProperties: false
                },
                {
                    type: "object",
                    properties: {
                        singleLine: {
                            type: "object",
                            properties: {
                                mode: {
                                    enum: ["strict", "minimum"]
                                },
                                beforeColon: {
                                    type: "boolean"
                                },
                                afterColon: {
                                    type: "boolean"
                                }
                            },
                            additionalProperties: false
                        },
                        multiLine: {
                            type: "object",
                            properties: {
                                align: {
                                    anyOf: [
                                        {
                                            enum: ["colon", "value"]
                                        },
                                        {
                                            type: "object",
                                            properties: {
                                                mode: {
                                                    enum: ["strict", "minimum"]
                                                },
                                                on: {
                                                    enum: ["colon", "value"]
                                                },
                                                beforeColon: {
                                                    type: "boolean"
                                                },
                                                afterColon: {
                                                    type: "boolean"
                                                }
                                            },
                                            additionalProperties: false
                                        }
                                    ]
                                },
                                mode: {
                                    enum: ["strict", "minimum"]
                                },
                                beforeColon: {
                                    type: "boolean"
                                },
                                afterColon: {
                                    type: "boolean"
                                }
                            },
                            additionalProperties: false
                        }
                    },
                    additionalProperties: false
                },
                {
                    type: "object",
                    properties: {
                        singleLine: {
                            type: "object",
                            properties: {
                                mode: {
                                    enum: ["strict", "minimum"]
                                },
                                beforeColon: {
                                    type: "boolean"
                                },
                                afterColon: {
                                    type: "boolean"
                                }
                            },
                            additionalProperties: false
                        },
                        multiLine: {
                            type: "object",
                            properties: {
                                mode: {
                                    enum: ["strict", "minimum"]
                                },
                                beforeColon: {
                                    type: "boolean"
                                },
                                afterColon: {
                                    type: "boolean"
                                }
                            },
                            additionalProperties: false
                        },
                        align: {
                            type: "object",
                            properties: {
                                mode: {
                                    enum: ["strict", "minimum"]
                                },
                                on: {
                                    enum: ["colon", "value"]
                                },
                                beforeColon: {
                                    type: "boolean"
                                },
                                afterColon: {
                                    type: "boolean"
                                }
                            },
                            additionalProperties: false
                        }
                    },
                    additionalProperties: false
                }
            ]
        }],
        messages: {
            extraKey: "Extra space after {{computed}}key '{{key}}'.",
            extraValue: "Extra space before value for {{computed}}key '{{key}}'.",
            missingKey: "Missing space after {{computed}}key '{{key}}'.",
            missingValue: "Missing space before value for {{computed}}key '{{key}}'."
        }
    },

create(context) {

/**
         * OPTIONS
         * "key-spacing": [2, {
         *     beforeColon: false,
         *     afterColon: true,
         *     align: "colon" // Optional, or "value"
         * }
         */
        const options = context.options[0] || {},
            ruleOptions = initOptions({}, options),
            multiLineOptions = ruleOptions.multiLine,
            singleLineOptions = ruleOptions.singleLine,
            alignmentOptions = ruleOptions.align || null;

const sourceCode = context.sourceCode;

/**
         * Determines if the given property is key-value property.
         * @param {ASTNode} property Property node to check.
         * @returns {boolean} Whether the property is a key-value property.
         */
        function isKeyValueProperty(property) {
            return !(
                (property.method ||
                property.shorthand ||
                property.kind !== "init" || property.type !== "Property") // Could be "ExperimentalSpreadProperty" or "SpreadElement"
            );
        }

/**
         * Starting from the given node (a property.key node here) looks forward
         * until it finds the colon punctuator and returns it.
         * @param {ASTNode} node The node to start looking from.
         * @returns {ASTNode} The colon punctuator.
         */
        function getNextColon(node) {
            return sourceCode.getTokenAfter(node, astUtils.isColonToken);
        }

/**
         * Starting from the given node (a property.key node here) looks forward
         * until it finds the last token before a colon punctuator and returns it.
         * @param {ASTNode} node The node to start looking from.
         * @returns {ASTNode} The last token before a colon punctuator.
         */
        function getLastTokenBeforeColon(node) {
            const colonToken = getNextColon(node);

return sourceCode.getTokenBefore(colonToken);
        }

/**
         * Starting from the given node (a property.key node here) looks forward
         * until it finds the first token after a colon punctuator and returns it.
         * @param {ASTNode} node The node to start looking from.
         * @returns {ASTNode} The first token after a colon punctuator.
         */
        function getFirstTokenAfterColon(node) {
            const colonToken = getNextColon(node);

return sourceCode.getTokenAfter(colonToken);
        }

/**
         * Checks whether a property is a member of the property group it follows.
         * @param {ASTNode} lastMember The last Property known to be in the group.
         * @param {ASTNode} candidate The next Property that might be in the group.
         * @returns {boolean} True if the candidate property is part of the group.
         */
        function continuesPropertyGroup(lastMember, candidate) {
            const groupEndLine = lastMember.loc.start.line,
                candidateValueStartLine = (isKeyValueProperty(candidate) ? getFirstTokenAfterColon(candidate.key) : candidate).loc.start.line;

if (candidateValueStartLine - groupEndLine <= 1) {
                return true;
            }

/*
             * Check that the first comment is adjacent to the end of the group, the
             * last comment is adjacent to the candidate property, and that successive
             * comments are adjacent to each other.
             */
            const leadingComments = sourceCode.getCommentsBefore(candidate);

if (
                leadingComments.length &&
                leadingComments[0].loc.start.line - groupEndLine <= 1 &&
                candidateValueStartLine - last(leadingComments).loc.end.line <= 1
            ) {
                for (let i = 1; i < leadingComments.length; i++) {
                    if (leadingComments[i].loc.start.line - leadingComments[i - 1].loc.end.line > 1) {
                        return false;
                    }
                }
                return true;
            }

return false;
        }

/**
         * Gets an object literal property's key as the identifier name or string value.
         * @param {ASTNode} property Property node whose key to retrieve.
         * @returns {string} The property's key.
         */
        function getKey(property) {
            const key = property.key;

if (property.computed) {
                return sourceCode.getText().slice(key.range[0], key.range[1]);
            }
            return astUtils.getStaticPropertyName(property);
        }

/**
         * Reports an appropriately-formatted error if spacing is incorrect on one
         * side of the colon.
         * @param {ASTNode} property Key-value pair in an object literal.
         * @param {string} side Side being verified - either "key" or "value".
         * @param {string} whitespace Actual whitespace string.
         * @param {int} expected Expected whitespace length.
         * @param {string} mode Value of the mode as "strict" or "minimum"
         * @returns {void}
         */
        function report(property, side, whitespace, expected, mode) {
            const diff = whitespace.length - expected;

if ((
                diff && mode === "strict" ||
                diff < 0 && mode === "minimum" ||
                diff > 0 && !expected && mode === "minimum") &&
                !(expected && containsLineTerminator(whitespace))
            ) {
                const nextColon = getNextColon(property.key),
                    tokenBeforeColon = sourceCode.getTokenBefore(nextColon, { includeComments: true }),
                    tokenAfterColon = sourceCode.getTokenAfter(nextColon, { includeComments: true }),
                    isKeySide = side === "key",
                    isExtra = diff > 0,
                    diffAbs = Math.abs(diff),
                    spaces = Array(diffAbs + 1).join(" ");

const locStart = isKeySide ? tokenBeforeColon.loc.end : nextColon.loc.start;
                const locEnd = isKeySide ? nextColon.loc.start : tokenAfterColon.loc.start;
                const missingLoc = isKeySide ? tokenBeforeColon.loc : tokenAfterColon.loc;
                const loc = isExtra ? { start: locStart, end: locEnd } : missingLoc;

let fix;

if (isExtra) {
                    let range;

// Remove whitespace
                    if (isKeySide) {
                        range = [tokenBeforeColon.range[1], tokenBeforeColon.range[1] + diffAbs];
                    } else {
                        range = [tokenAfterColon.range[0] - diffAbs, tokenAfterColon.range[0]];
                    }
                    fix = function(fixer) {
                        return fixer.removeRange(range);
                    };
                } else {

// Add whitespace
                    if (isKeySide) {
                        fix = function(fixer) {
                            return fixer.insertTextAfter(tokenBeforeColon, spaces);
                        };
                    } else {
                        fix = function(fixer) {
                            return fixer.insertTextBefore(tokenAfterColon, spaces);
                        };
                    }
                }

let messageId = "";

if (isExtra) {
                    messageId = side === "key" ? "extraKey" : "extraValue";
                } else {
                    messageId = side === "key" ? "missingKey" : "missingValue";
                }

context.report({
                    node: property[side],
                    loc,
                    messageId,
                    data: {
                        computed: property.computed ? "computed " : "",
                        key: getKey(property)
                    },
                    fix
                });
            }
        }

/**
         * Gets the number of characters in a key, including quotes around string
         * keys and braces around computed property keys.
         * @param {ASTNode} property Property of on object literal.
         * @returns {int} Width of the key.
         */
        function getKeyWidth(property) {
            const startToken = sourceCode.getFirstToken(property);
            const endToken = getLastTokenBeforeColon(property.key);

return getGraphemeCount(sourceCode.getText().slice(startToken.range[0], endToken.range[1]));
        }

/**
         * Gets the whitespace around the colon in an object literal property.
         * @param {ASTNode} property Property node from an object literal.
         * @returns {Object} Whitespace before and after the property's colon.
         */
        function getPropertyWhitespace(property) {
            const whitespace = /(\s*):(\s*)/u.exec(sourceCode.getText().slice(
                property.key.range[1], property.value.range[0]
            ));

if (whitespace) {
                return {
                    beforeColon: whitespace[1],
                    afterColon: whitespace[2]
                };
            }
            return null;
        }

/**
         * Creates groups of properties.
         * @param {ASTNode} node ObjectExpression node being evaluated.
         * @returns {Array<ASTNode[]>} Groups of property AST node lists.
         */
        function createGroups(node) {
            if (node.properties.length === 1) {
                return [node.properties];
            }

return node.properties.reduce((groups, property) => {
                const currentGroup = last(groups),
                    prev = last(currentGroup);

if (!prev || continuesPropertyGroup(prev, property)) {
                    currentGroup.push(property);
                } else {
                    groups.push([property]);
                }

return groups;
            }, [
                []
            ]);
        }

/**
         * Verifies correct vertical alignment of a group of properties.
         * @param {ASTNode[]} properties List of Property AST nodes.
         * @returns {void}
         */
        function verifyGroupAlignment(properties) {
            const length = properties.length,
                widths = properties.map(getKeyWidth), // Width of keys, including quotes
                align = alignmentOptions.on; // "value" or "colon"
            let targetWidth = Math.max(...widths),
                beforeColon, afterColon, mode;

if (alignmentOptions && length > 1) { // When aligning values within a group, use the alignment configuration.
                beforeColon = alignmentOptions.beforeColon;
                afterColon = alignmentOptions.afterColon;
                mode = alignmentOptions.mode;
            } else {
                beforeColon = multiLineOptions.beforeColon;
                afterColon = multiLineOptions.afterColon;
                mode = alignmentOptions.mode;
            }

// Conditionally include one space before or after colon
            targetWidth += (align === "colon" ? beforeColon : afterColon);

for (let i = 0; i < length; i++) {
                const property = properties[i];
                const whitespace = getPropertyWhitespace(property);

if (whitespace) { // Object literal getters/setters lack a colon
                    const width = widths[i];

if (align === "value") {
                        report(property, "key", whitespace.beforeColon, beforeColon, mode);
                        report(property, "value", whitespace.afterColon, targetWidth - width, mode);
                    } else { // align = "colon"
                        report(property, "key", whitespace.beforeColon, targetWidth - width, mode);
                        report(property, "value", whitespace.afterColon, afterColon, mode);
                    }
                }
            }
        }

/**
         * Verifies spacing of property conforms to specified options.
         * @param {ASTNode} node Property node being evaluated.
         * @param {Object} lineOptions Configured singleLine or multiLine options
         * @returns {void}
         */
        function verifySpacing(node, lineOptions) {
            const actual = getPropertyWhitespace(node);

if (actual) { // Object literal getters/setters lack colons
                report(node, "key", actual.beforeColon, lineOptions.beforeColon, lineOptions.mode);
                report(node, "value", actual.afterColon, lineOptions.afterColon, lineOptions.mode);
            }
        }

/**
         * Verifies spacing of each property in a list.
         * @param {ASTNode[]} properties List of Property AST nodes.
         * @param {Object} lineOptions Configured singleLine or multiLine options
         * @returns {void}
         */
        function verifyListSpacing(properties, lineOptions) {
            const length = properties.length;

for (let i = 0; i < length; i++) {
                verifySpacing(properties[i], lineOptions);
            }
        }

/**
         * Verifies vertical alignment, taking into account groups of properties.
         * @param {ASTNode} node ObjectExpression node being evaluated.
         * @returns {void}
         */
        function verifyAlignment(node) {
            createGroups(node).forEach(group => {
                const properties = group.filter(isKeyValueProperty);

if (properties.length > 0 && isSingleLineProperties(properties)) {
                    verifyListSpacing(properties, multiLineOptions);
                } else {
                    verifyGroupAlignment(properties);
                }
            });
        }

//--------------------------------------------------------------------------
        // Public API
        //--------------------------------------------------------------------------

if (alignmentOptions) { // Verify vertical alignment

return {
                ObjectExpression(node) {
                    if (isSingleLine(node)) {
                        verifyListSpacing(node.properties.filter(isKeyValueProperty), singleLineOptions);
                    } else {
                        verifyAlignment(node);
                    }
                }
            };

}

// Obey beforeColon and afterColon in each property as configured
        return {
            Property(node) {
                verifySpacing(node, isSingleLine(node.parent) ? singleLineOptions : multiLineOptions);
            }
        };

}
};

${this.title}

Code Editor : key-spacing.js