comma-dangle.js
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"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const util = __importStar(require("../util"));
const comma_dangle_1 = __importDefault(require("eslint/lib/rules/comma-dangle"));
const experimental_utils_1 = require("@typescript-eslint/experimental-utils");
const OPTION_VALUE_SCHEME = [
'always-multiline',
'always',
'never',
'only-multiline',
];
const DEFAULT_OPTION_VALUE = 'never';
function normalizeOptions(options) {
var _a, _b, _c;
if (typeof options === 'string') {
return {
enums: options,
generics: options,
tuples: options,
};
}
return {
enums: (_a = options.enums) !== null && _a !== void 0 ? _a : DEFAULT_OPTION_VALUE,
generics: (_b = options.generics) !== null && _b !== void 0 ? _b : DEFAULT_OPTION_VALUE,
tuples: (_c = options.tuples) !== null && _c !== void 0 ? _c : DEFAULT_OPTION_VALUE,
};
}
exports.default = util.createRule({
name: 'comma-dangle',
meta: {
type: 'layout',
docs: {
description: 'Require or disallow trailing comma',
category: 'Stylistic Issues',
recommended: false,
extendsBaseRule: true,
},
schema: {
definitions: {
value: {
enum: OPTION_VALUE_SCHEME,
},
valueWithIgnore: {
enum: [...OPTION_VALUE_SCHEME, 'ignore'],
},
},
type: 'array',
items: [
{
oneOf: [
{
$ref: '#/definitions/value',
},
{
type: 'object',
properties: {
arrays: { $ref: '#/definitions/valueWithIgnore' },
objects: { $ref: '#/definitions/valueWithIgnore' },
imports: { $ref: '#/definitions/valueWithIgnore' },
exports: { $ref: '#/definitions/valueWithIgnore' },
functions: { $ref: '#/definitions/valueWithIgnore' },
enums: { $ref: '#/definitions/valueWithIgnore' },
generics: { $ref: '#/definitions/valueWithIgnore' },
tuples: { $ref: '#/definitions/valueWithIgnore' },
},
additionalProperties: false,
},
],
},
],
},
fixable: 'code',
messages: comma_dangle_1.default.meta.messages,
},
defaultOptions: ['never'],
create(context, [options]) {
const rules = comma_dangle_1.default.create(context);
const sourceCode = context.getSourceCode();
const normalizedOptions = normalizeOptions(options);
const predicate = {
always: forceComma,
'always-multiline': forceCommaIfMultiline,
'only-multiline': allowCommaIfMultiline,
never: forbidComma,
ignore: () => { },
};
function last(nodes) {
var _a;
return (_a = nodes[nodes.length - 1]) !== null && _a !== void 0 ? _a : null;
}
function getLastItem(node) {
switch (node.type) {
case experimental_utils_1.AST_NODE_TYPES.TSEnumDeclaration:
return last(node.members);
case experimental_utils_1.AST_NODE_TYPES.TSTypeParameterDeclaration:
return last(node.params);
case experimental_utils_1.AST_NODE_TYPES.TSTupleType:
return last(node.elementTypes);
default:
return null;
}
}
function getTrailingToken(node) {
const last = getLastItem(node);
const trailing = last && sourceCode.getTokenAfter(last);
return trailing;
}
function isMultiline(node) {
const last = getLastItem(node);
const lastToken = sourceCode.getLastToken(node);
return (last === null || last === void 0 ? void 0 : last.loc.end.line) !== (lastToken === null || lastToken === void 0 ? void 0 : lastToken.loc.end.line);
}
function forbidComma(node) {
const last = getLastItem(node);
const trailing = getTrailingToken(node);
if (last && trailing && util.isCommaToken(trailing)) {
context.report({
node,
messageId: 'unexpected',
fix(fixer) {
return fixer.remove(trailing);
},
});
}
}
function forceComma(node) {
const last = getLastItem(node);
const trailing = getTrailingToken(node);
if (last && trailing && !util.isCommaToken(trailing)) {
context.report({
node,
messageId: 'missing',
fix(fixer) {
return fixer.insertTextAfter(last, ',');
},
});
}
}
function allowCommaIfMultiline(node) {
if (!isMultiline(node)) {
forbidComma(node);
}
}
function forceCommaIfMultiline(node) {
if (isMultiline(node)) {
forceComma(node);
}
else {
forbidComma(node);
}
}
return Object.assign(Object.assign({}, rules), { TSEnumDeclaration: predicate[normalizedOptions.enums], TSTypeParameterDeclaration: predicate[normalizedOptions.generics], TSTupleType: predicate[normalizedOptions.tuples] });
},
});
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