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{"ast":null,"code":"/*\n Stencil Client Platform v2.5.0 | MIT Licensed | https://stenciljs.com\n */\n/**\n * @license\n * Copyright Google Inc. All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n *\n * This file is a port of shadowCSS from webcomponents.js to TypeScript.\n * https://github.com/webcomponents/webcomponentsjs/blob/4efecd7e0e/src/ShadowCSS/ShadowCSS.js\n * https://github.com/angular/angular/blob/master/packages/compiler/src/shadow_css.ts\n */\nconst safeSelector = selector => {\n const placeholders = [];\n let index = 0;\n let content;\n // Replaces attribute selectors with placeholders.\n // The WS in [attr=\"va lue\"] would otherwise be interpreted as a selector separator.\n selector = selector.replace(/(\\[[^\\]]*\\])/g, (_, keep) => {\n const replaceBy = `__ph-${index}__`;\n placeholders.push(keep);\n index++;\n return replaceBy;\n });\n // Replaces the expression in `:nth-child(2n + 1)` with a placeholder.\n // WS and \"+\" would otherwise be interpreted as selector separators.\n content = selector.replace(/(:nth-[-\\w]+)(\\([^)]+\\))/g, (_, pseudo, exp) => {\n const replaceBy = `__ph-${index}__`;\n placeholders.push(exp);\n index++;\n return pseudo + replaceBy;\n });\n const ss = {\n content,\n placeholders\n };\n return ss;\n};\nconst restoreSafeSelector = (placeholders, content) => {\n return content.replace(/__ph-(\\d+)__/g, (_, index) => placeholders[+index]);\n};\nconst _polyfillHost = '-shadowcsshost';\nconst _polyfillSlotted = '-shadowcssslotted';\n// note: :host-context pre-processed to -shadowcsshostcontext.\nconst _polyfillHostContext = '-shadowcsscontext';\nconst _parenSuffix = ')(?:\\\\((' + '(?:\\\\([^)(]*\\\\)|[^)(]*)+?' + ')\\\\))?([^,{]*)';\nconst _cssColonHostRe = new RegExp('(' + _polyfillHost + _parenSuffix, 'gim');\nconst _cssColonHostContextRe = new RegExp('(' + _polyfillHostContext + _parenSuffix, 'gim');\nconst _cssColonSlottedRe = new RegExp('(' + _polyfillSlotted + _parenSuffix, 'gim');\nconst _polyfillHostNoCombinator = _polyfillHost + '-no-combinator';\nconst _polyfillHostNoCombinatorRe = /-shadowcsshost-no-combinator([^\\s]*)/;\nconst _shadowDOMSelectorsRe = [/::shadow/g, /::content/g];\nconst _selectorReSuffix = '([>\\\\s~+[.,{:][\\\\s\\\\S]*)?$';\nconst _polyfillHostRe = /-shadowcsshost/gim;\nconst _colonHostRe = /:host/gim;\nconst _colonSlottedRe = /::slotted/gim;\nconst _colonHostContextRe = /:host-context/gim;\nconst _commentRe = /\\/\\*\\s*[\\s\\S]*?\\*\\//g;\nconst stripComments = input => {\n return input.replace(_commentRe, '');\n};\nconst _commentWithHashRe = /\\/\\*\\s*#\\s*source(Mapping)?URL=[\\s\\S]+?\\*\\//g;\nconst extractCommentsWithHash = input => {\n return input.match(_commentWithHashRe) || [];\n};\nconst _ruleRe = /(\\s*)([^;\\{\\}]+?)(\\s*)((?:{%BLOCK%}?\\s*;?)|(?:\\s*;))/g;\nconst _curlyRe = /([{}])/g;\nconst OPEN_CURLY = '{';\nconst CLOSE_CURLY = '}';\nconst BLOCK_PLACEHOLDER = '%BLOCK%';\nconst processRules = (input, ruleCallback) => {\n const inputWithEscapedBlocks = escapeBlocks(input);\n let nextBlockIndex = 0;\n return inputWithEscapedBlocks.escapedString.replace(_ruleRe, (...m) => {\n const selector = m[2];\n let content = '';\n let suffix = m[4];\n let contentPrefix = '';\n if (suffix && suffix.startsWith('{' + BLOCK_PLACEHOLDER)) {\n content = inputWithEscapedBlocks.blocks[nextBlockIndex++];\n suffix = suffix.substring(BLOCK_PLACEHOLDER.length + 1);\n contentPrefix = '{';\n }\n const cssRule = {\n selector,\n content\n };\n const rule = ruleCallback(cssRule);\n return `${m[1]}${rule.selector}${m[3]}${contentPrefix}${rule.content}${suffix}`;\n });\n};\nconst escapeBlocks = input => {\n const inputParts = input.split(_curlyRe);\n const resultParts = [];\n const escapedBlocks = [];\n let bracketCount = 0;\n let currentBlockParts = [];\n for (let partIndex = 0; partIndex < inputParts.length; partIndex++) {\n const part = inp