eslint-plugin-css-modules
Version:
Checks that you are using the existent css/scss/less classes, no more no less
129 lines (105 loc) • 21.2 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.eliminateGlobals = exports.getParentSelectorClassesMap = exports.getExtendClassesMap = exports.getComposesClassesMap = exports.getRegularClassesMap = undefined;
var _fp = require('lodash/fp');
var _fp2 = _interopRequireDefault(_fp);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var getRegularClassesMap = exports.getRegularClassesMap = function getRegularClassesMap(ast) {
var ruleSets = [];
ast.traverseByType('ruleset', function (node) {
return ruleSets.push(node);
});
return _fp2.default.compose(_fp2.default.reduce(function (result, key) {
result[key] = false; // classes haven't been used
return result;
}, {}), _fp2.default.map('content'), _fp2.default.filter({ type: 'ident' }), _fp2.default.flatMap('content'), _fp2.default.filter({ type: 'class' }), _fp2.default.flatMap('content'), _fp2.default.filter({ type: 'selector' }), _fp2.default.flatMap('content'))(ruleSets);
};
/* eslint-disable no-param-reassign */
var getComposesClassesMap = exports.getComposesClassesMap = function getComposesClassesMap(ast) {
var declarations = [];
ast.traverseByType('declaration', function (node) {
return declarations.push(node);
});
return _fp2.default.compose(_fp2.default.reduce(function (result, key) {
result[key] = true; // mark composed classes as true
return result;
}, {}), _fp2.default.flatMap(_fp2.default.compose(_fp2.default.map(_fp2.default.get('content')), _fp2.default.filter({ type: 'ident' }), _fp2.default.get('content'), _fp2.default.find({ type: 'value' }), _fp2.default.get('content'))),
/*
reject classes composing from other files
eg.
.foo {
composes: .bar from './otherFile';
}
*/
_fp2.default.reject(_fp2.default.compose(_fp2.default.find({ type: 'ident', content: 'from' }), _fp2.default.get('content'), _fp2.default.find({ type: 'value' }), _fp2.default.get('content'))), _fp2.default.filter(_fp2.default.compose(_fp2.default.find({ type: 'ident', content: 'composes' }), _fp2.default.get('content'), _fp2.default.find({ type: 'property' }), _fp2.default.get('content'))))(declarations);
};
var getExtendClassesMap = exports.getExtendClassesMap = function getExtendClassesMap(ast) {
var extendNodes = [];
ast.traverseByType('extend', function (node) {
return extendNodes.push(node);
});
return _fp2.default.compose(_fp2.default.reduce(function (result, key) {
result[key] = true; // mark extend classes as true
return result;
}, {}), _fp2.default.map(_fp2.default.compose(_fp2.default.get('content'), _fp2.default.find({ type: 'ident' }), _fp2.default.get('content'), _fp2.default.find({ type: 'class' }), _fp2.default.get('content'), _fp2.default.find({ type: 'selector' }), _fp2.default.get('content'))))(extendNodes);
};
/**
* Resolves parent selectors to their full class names.
*
* E.g. `.foo { &_bar {color: blue } }` to `.foo_bar`.
*/
var getParentSelectorClassesMap = exports.getParentSelectorClassesMap = function getParentSelectorClassesMap(ast) {
var classesMap = {};
// Recursively traverses down the tree looking for parent selector
// extensions. Recursion is necessary as these selectors can be nested.
var getExtensions = function getExtensions(nodeContent) {
var blockContent = _fp2.default.compose(_fp2.default.flatMap('content'), _fp2.default.filter({ type: 'block' }))(nodeContent);
var rulesetsContent = _fp2.default.flatMap('content', _fp2.default.concat(
// `ruleset` children
_fp2.default.filter({ type: 'ruleset' }, blockContent),
// `ruleset` descendants nested in `include` nodes
_fp2.default.compose(_fp2.default.filter({ type: 'ruleset' }), _fp2.default.flatMap('content'), _fp2.default.filter({ type: 'block' }), _fp2.default.flatMap('content'), _fp2.default.filter({ type: 'include' }))(blockContent)));
var extensions = _fp2.default.compose(_fp2.default.map('content'), _fp2.default.filter({ type: 'ident' }), _fp2.default.flatMap('content'), _fp2.default.filter({ type: 'parentSelectorExtension' }), _fp2.default.flatMap('content'), _fp2.default.filter({ type: 'selector' }))(rulesetsContent);
if (!extensions.length) return [];
var nestedExtensions = getExtensions(rulesetsContent);
var result = extensions;
if (nestedExtensions.length) {
nestedExtensions.forEach(function (nestedExt) {
extensions.forEach(function (ext) {
result.push(ext + nestedExt);
});
});
}
return result;
};
ast.traverseByType('ruleset', function (node) {
var classNames = _fp2.default.compose(_fp2.default.map('content'), _fp2.default.filter({ type: 'ident' }), _fp2.default.flatMap('content'), _fp2.default.filter({ type: 'class' }), _fp2.default.flatMap('content'), _fp2.default.filter({ type: 'selector' }))(node.content);
if (!classNames.length) return;
var extensions = getExtensions(node.content);
if (!extensions.length) return;
classNames.forEach(function (className) {
extensions.forEach(function (ext) {
classesMap[className + ext] = false;
});
// Ignore the base class if it only exists for nesting parent selectors
var hasDeclarations = _fp2.default.compose(_fp2.default.filter({ type: 'declaration' }), _fp2.default.flatMap('content'), _fp2.default.filter({ type: 'block' }))(node.content).length > 0;
if (!hasDeclarations) classesMap[className] = true;
});
});
return classesMap;
};
/*
mutates ast by removing instances of :global
*/
var eliminateGlobals = exports.eliminateGlobals = function eliminateGlobals(ast) {
ast.traverse(function (node, index, parent) {
if (node.type === 'ruleset') {
if (_fp2.default.compose(_fp2.default.negate(_fp2.default.isEmpty), _fp2.default.find({ type: 'ident', content: 'global' }), _fp2.default.get('content'), _fp2.default.find({ type: 'pseudoClass' }), _fp2.default.get('content'), _fp2.default.find({ type: 'selector' }), _fp2.default.get('content'))(node)) {
parent.removeChild(index);
}
}
});
};
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@flow\n/* eslint-disable no-param-reassign */\nimport fp from 'lodash/fp';\n\nimport type { gASTNode } from '../types';\n\ntype classMapType = {\n  [key: string]: boolean,\n}\n\nexport const getRegularClassesMap = (ast: gASTNode): classMapType => {\n  const ruleSets: Array<gASTNode> = [];\n  ast.traverseByType('ruleset', node => ruleSets.push(node));\n\n  return fp.compose(\n    fp.reduce((result, key) => {\n      result[key] = false; // classes haven't been used\n      return result;\n    }, {}),\n    fp.map('content'),\n    fp.filter({ type: 'ident' }),\n    fp.flatMap('content'),\n    fp.filter({ type: 'class' }),\n    fp.flatMap('content'),\n    fp.filter({ type: 'selector' }),\n    fp.flatMap('content'),\n  )(ruleSets);\n};\n\nexport const getComposesClassesMap = (ast: gASTNode): classMapType => {\n  const declarations = [];\n  ast.traverseByType('declaration', node => declarations.push(node));\n\n  return fp.compose(\n    fp.reduce((result, key) => {\n      result[key] = true; // mark composed classes as true\n      return result;\n    }, {}),\n    fp.flatMap(fp.compose(\n      fp.map(fp.get('content')),\n      fp.filter({ type: 'ident' }),\n      fp.get('content'),\n      fp.find({ type: 'value' }),\n      fp.get('content'),\n    )),\n    /*\n       reject classes composing from other files\n       eg.\n       .foo {\n       composes: .bar from './otherFile';\n       }\n     */\n    fp.reject(fp.compose(\n      fp.find({ type: 'ident', content: 'from' }),\n      fp.get('content'),\n      fp.find({ type: 'value' }),\n      fp.get('content'),\n    )),\n    fp.filter(fp.compose(\n      fp.find({ type: 'ident', content: 'composes' }),\n      fp.get('content'),\n      fp.find({ type: 'property' }),\n      fp.get('content'),\n    )),\n  )(declarations);\n};\n\nexport const getExtendClassesMap = (ast: gASTNode): classMapType => {\n  const extendNodes = [];\n  ast.traverseByType('extend', node => extendNodes.push(node));\n\n  return fp.compose(\n    fp.reduce((result, key) => {\n      result[key] = true; // mark extend classes as true\n      return result;\n    }, {}),\n    fp.map(fp.compose(\n      fp.get('content'),\n      fp.find({ type: 'ident' }),\n      fp.get('content'),\n      fp.find({ type: 'class' }),\n      fp.get('content'),\n      fp.find({ type: 'selector' }),\n      fp.get('content'),\n    )),\n  )(extendNodes);\n};\n\n/**\n * Resolves parent selectors to their full class names.\n *\n * E.g. `.foo { &_bar {color: blue } }` to `.foo_bar`.\n */\nexport const getParentSelectorClassesMap = (ast: gASTNode): classMapType => {\n  const classesMap: classMapType = {};\n\n  // Recursively traverses down the tree looking for parent selector\n  // extensions. Recursion is necessary as these selectors can be nested.\n  const getExtensions = nodeContent => {\n    const blockContent = fp.compose(\n      fp.flatMap('content'),\n      fp.filter({ type: 'block' })\n    )(nodeContent);\n\n    const rulesetsContent = fp.flatMap('content', fp.concat(\n      // `ruleset` children\n      fp.filter({ type: 'ruleset' }, blockContent),\n\n      // `ruleset` descendants nested in `include` nodes\n      fp.compose(\n        fp.filter({ type: 'ruleset' }),\n        fp.flatMap('content'),\n        fp.filter({ type: 'block' }),\n        fp.flatMap('content'),\n        fp.filter({ type: 'include' })\n      )(blockContent)\n    ));\n\n    const extensions = fp.compose(\n      fp.map('content'),\n      fp.filter({ type: 'ident' }),\n      fp.flatMap('content'),\n      fp.filter({ type: 'parentSelectorExtension' }),\n      fp.flatMap('content'),\n      fp.filter({ type: 'selector' })\n    )(rulesetsContent);\n\n    if (!extensions.length) return [];\n\n    const nestedExtensions = getExtensions(rulesetsContent);\n    const result = extensions;\n    if (nestedExtensions.length) {\n      nestedExtensions.forEach(nestedExt => {\n        extensions.forEach(ext => {\n          result.push(ext + nestedExt);\n        });\n      });\n    }\n\n    return result;\n  };\n\n  ast.traverseByType('ruleset', node => {\n    const classNames = fp.compose(\n      fp.map('content'),\n      fp.filter({ type: 'ident' }),\n      fp.flatMap('content'),\n      fp.filter({ type: 'class' }),\n      fp.flatMap('content'),\n      fp.filter({ type: 'selector' })\n    )(node.content);\n\n    if (!classNames.length) return;\n\n    const extensions = getExtensions(node.content);\n    if (!extensions.length) return;\n\n    classNames.forEach(className => {\n      extensions.forEach(ext => {\n        classesMap[className + ext] = false;\n      });\n\n      // Ignore the base class if it only exists for nesting parent selectors\n      const hasDeclarations = fp.compose(\n        fp.filter({ type: 'declaration' }),\n        fp.flatMap('content'),\n        fp.filter({ type: 'block' })\n      )(node.content).length > 0;\n      if (!hasDeclarations) classesMap[className] = true;\n    });\n  });\n\n  return classesMap;\n};\n\n/*\n   mutates ast by removing instances of :global\n */\nexport const eliminateGlobals = (ast: gASTNode) => {\n  ast.traverse((node, index, parent) => {\n    if (node.type === 'ruleset') {\n      if (\n        fp.compose(\n          fp.negate(fp.isEmpty),\n          fp.find({ type: 'ident', content: 'global' }),\n          fp.get('content'),\n          fp.find({ type: 'pseudoClass' }),\n          fp.get('content'),\n          fp.find({ type: 'selector' }),\n          fp.get('content'),\n        )(node)\n      ) {\n        parent.removeChild(index);\n      }\n    }\n  });\n};\n"]}