lepu-test-platform-web/node_modules/postcss-modules-extract-imp.../lib/index.js

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'use strict';
var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();
var postcss = require('postcss');
var topologicalSort = require('./topologicalSort');
var declWhitelist = ['composes'];
var declFilter = new RegExp(`^(${declWhitelist.join('|')})$`);
var matchImports = /^(.+?)\s+from\s+(?:"([^"]+)"|'([^']+)'|(global))$/;
var icssImport = /^:import\((?:"([^"]+)"|'([^']+)')\)/;
var VISITED_MARKER = 1;
function createParentName(rule, root) {
return `__${root.index(rule.parent)}_${rule.selector}`;
}
function serializeImports(imports) {
return imports.map(function (importPath) {
return '`' + importPath + '`';
}).join(', ');
}
/**
* :import('G') {}
*
* Rule
* composes: ... from 'A'
* composes: ... from 'B'
* Rule
* composes: ... from 'A'
* composes: ... from 'A'
* composes: ... from 'C'
*
* Results in:
*
* graph: {
* G: [],
* A: [],
* B: ['A'],
* C: ['A'],
* }
*/
function addImportToGraph(importId, parentId, graph, visited) {
var siblingsId = parentId + '_' + 'siblings';
var visitedId = parentId + '_' + importId;
if (visited[visitedId] !== VISITED_MARKER) {
if (!Array.isArray(visited[siblingsId])) visited[siblingsId] = [];
var siblings = visited[siblingsId];
if (Array.isArray(graph[importId])) graph[importId] = graph[importId].concat(siblings);else graph[importId] = siblings.slice();
visited[visitedId] = VISITED_MARKER;
siblings.push(importId);
}
}
module.exports = postcss.plugin('modules-extract-imports', function () {
var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
var failOnWrongOrder = options.failOnWrongOrder;
return function (css) {
var graph = {};
var visited = {};
var existingImports = {};
var importDecls = {};
var imports = {};
var importIndex = 0;
var createImportedName = typeof options.createImportedName !== 'function' ? function (importName /*, path*/) {
return `i__imported_${importName.replace(/\W/g, '_')}_${importIndex++}`;
} : options.createImportedName;
// Check the existing imports order and save refs
css.walkRules(function (rule) {
var matches = icssImport.exec(rule.selector);
if (matches) {
var _matches = _slicedToArray(matches, 3),
/*match*/doubleQuotePath = _matches[1],
singleQuotePath = _matches[2];
var importPath = doubleQuotePath || singleQuotePath;
addImportToGraph(importPath, 'root', graph, visited);
existingImports[importPath] = rule;
}
});
// Find any declaration that supports imports
css.walkDecls(declFilter, function (decl) {
var matches = decl.value.match(matchImports);
var tmpSymbols = void 0;
if (matches) {
var _matches2 = _slicedToArray(matches, 5),
/*match*/symbols = _matches2[1],
doubleQuotePath = _matches2[2],
singleQuotePath = _matches2[3],
global = _matches2[4];
if (global) {
// Composing globals simply means changing these classes to wrap them in global(name)
tmpSymbols = symbols.split(/\s+/).map(function (s) {
return `global(${s})`;
});
} else {
var importPath = doubleQuotePath || singleQuotePath;
var parentRule = createParentName(decl.parent, css);
addImportToGraph(importPath, parentRule, graph, visited);
importDecls[importPath] = decl;
imports[importPath] = imports[importPath] || {};
tmpSymbols = symbols.split(/\s+/).map(function (s) {
if (!imports[importPath][s]) {
imports[importPath][s] = createImportedName(s, importPath);
}
return imports[importPath][s];
});
}
decl.value = tmpSymbols.join(' ');
}
});
var importsOrder = topologicalSort(graph, failOnWrongOrder);
if (importsOrder instanceof Error) {
var importPath = importsOrder.nodes.find(function (importPath) {
return importDecls.hasOwnProperty(importPath);
});
var decl = importDecls[importPath];
var errMsg = 'Failed to resolve order of composed modules ' + serializeImports(importsOrder.nodes) + '.';
throw decl.error(errMsg, {
plugin: 'modules-extract-imports',
word: 'composes'
});
}
var lastImportRule = void 0;
importsOrder.forEach(function (path) {
var importedSymbols = imports[path];
var rule = existingImports[path];
if (!rule && importedSymbols) {
rule = postcss.rule({
selector: `:import("${path}")`,
raws: { after: '\n' }
});
if (lastImportRule) css.insertAfter(lastImportRule, rule);else css.prepend(rule);
}
lastImportRule = rule;
if (!importedSymbols) return;
Object.keys(importedSymbols).forEach(function (importedSymbol) {
rule.append(postcss.decl({
value: importedSymbol,
prop: importedSymbols[importedSymbol],
raws: { before: '\n ' }
}));
});
});
};
});