libs update to support chart.js v4

LICENSE.md

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2017-2021 Akihiko Kusanagi
+Copyright (c) 2017-2025 Akihiko Kusanagi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 

docs/.vuepress/config.js

@@ -42,7 +42,7 @@ module.exports = {
     ['@simonbrunel/vuepress-plugin-versions', {
       filters: {
         suffix: (tag) => tag ? ` (${tag})` : '',
-        title: (v, vars) => window.location.href.includes('master') ? 'Development (master)' : v + (vars.tag ? ` (${tag})` : ''),
+        title: (v, vars) => window.location.href.includes('master') ? 'Development (master)' : v + (vars.tag ? ` (${vars.tag})` : ''),
         link: (v, vars) => vars.prerelease ? 'next' : v
       },
       menu: {

eslint.config.mjs

@@ -0,0 +1,117 @@
+// Flat ESLint config for ESLint v9 (ESM)
+// Covers JS, TypeScript (in types/), and Markdown files
+
+import js from '@eslint/js';
+import tsParser from '@typescript-eslint/parser';
+import tsPlugin from '@typescript-eslint/eslint-plugin';
+import markdown from 'eslint-plugin-markdown';
+
+/** @type {import('eslint').Linter.FlatConfig[]} */
+export default [
+  // Global ignores (migrated from .eslintignore)
+  {
+    ignores: [
+      'dist/**/*.js',
+      'dist/**/*.html',
+      'docs/scripts/chartjs-chart-financial.js',
+    ],
+  },
+
+  // JavaScript files
+  js.configs.recommended,
+  {
+    files: ['**/*.js'],
+    languageOptions: {
+      ecmaVersion: 2021,
+      sourceType: 'module',
+    },
+  },
+
+  // Node.js environment files
+  {
+    files: ['rollup.config.js', 'scripts/**/*.js', 'eslint.config.*', 'docs/.vuepress/**/*.js'],
+    languageOptions: {
+      sourceType: 'commonjs',
+      globals: {
+        require: 'readonly',
+        module: 'readonly',
+        process: 'readonly',
+        console: 'readonly',
+        __dirname: 'readonly',
+        // VuePress config may access window at runtime on client
+        window: 'readonly',
+      },
+    },
+  },
+
+  // Browser environment files
+  {
+    files: ['src/**/*.js'],
+    languageOptions: {
+      globals: {
+        window: 'readonly',
+        setInterval: 'readonly',
+        clearInterval: 'readonly',
+        setTimeout: 'readonly',
+      },
+    },
+  },
+
+  // TypeScript declaration files under types/
+  {
+    files: ['types/**/*.ts'],
+    languageOptions: {
+      parser: tsParser,
+      ecmaVersion: 2021,
+      sourceType: 'module',
+    },
+    plugins: {
+      '@typescript-eslint': tsPlugin,
+    },
+    rules: {
+      // Start from the recommended rule set if available
+      ...(tsPlugin.configs && tsPlugin.configs.recommended
+        ? tsPlugin.configs.recommended.rules
+        : {}),
+      // Declaration files often intentionally redeclare and use empty interfaces for augmentation
+      'no-redeclare': 'off',
+      '@typescript-eslint/no-redeclare': 'off',
+      '@typescript-eslint/no-empty-interface': 'off',
+      '@typescript-eslint/no-empty-object-type': 'off',
+      '@typescript-eslint/no-unused-vars': 'off',
+    },
+  },
+
+  // Lint Markdown files using the markdown processor
+  {
+    files: ['**/*.md'],
+    plugins: {
+      markdown,
+    },
+    processor: 'markdown/markdown',
+  },
+
+  // Relax rules for code blocks extracted from Markdown
+  {
+    files: ['**/*.md/*.js', '**/*.md/*.ts'],
+    rules: {
+      'no-undef': 'off',
+      'no-unused-vars': 'off',
+    },
+  },
+
+  // Use TS parser for TypeScript code blocks in Markdown
+  {
+    files: ['**/*.md/*.ts'],
+    languageOptions: {
+      parser: tsParser,
+      ecmaVersion: 2021,
+      sourceType: 'module',
+    },
+    plugins: {
+      '@typescript-eslint': tsPlugin,
+    },
+  },
+];
+
+