91 lines
1.8 KiB
JavaScript
91 lines
1.8 KiB
JavaScript
/**
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* @fileoverview Enforce a maximum number of classes per file
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* @author James Garbutt <https://github.com/43081j>
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Requirements
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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/** @type {import('../types').Rule.RuleModule} */
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module.exports = {
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meta: {
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type: "suggestion",
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docs: {
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description: "Enforce a maximum number of classes per file",
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recommended: false,
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url: "https://eslint.org/docs/latest/rules/max-classes-per-file",
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},
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schema: [
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{
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oneOf: [
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{
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type: "integer",
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minimum: 1,
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},
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{
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type: "object",
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properties: {
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ignoreExpressions: {
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type: "boolean",
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},
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max: {
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type: "integer",
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minimum: 1,
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},
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},
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additionalProperties: false,
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},
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],
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},
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],
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messages: {
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maximumExceeded:
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"File has too many classes ({{ classCount }}). Maximum allowed is {{ max }}.",
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},
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},
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create(context) {
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const [option = {}] = context.options;
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const [ignoreExpressions, max] =
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typeof option === "number"
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? [false, option || 1]
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: [option.ignoreExpressions, option.max || 1];
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let classCount = 0;
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return {
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Program() {
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classCount = 0;
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},
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"Program:exit"(node) {
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if (classCount > max) {
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context.report({
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node,
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messageId: "maximumExceeded",
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data: {
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classCount,
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max,
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},
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});
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}
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},
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ClassDeclaration() {
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classCount++;
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},
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ClassExpression() {
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if (!ignoreExpressions) {
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classCount++;
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}
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},
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};
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},
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};
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