gnezim
69 lines
2.3 KiB
TypeScript
69 lines
2.3 KiB
TypeScript
/**
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* Copyright 2018 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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export default class Critters {
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/**
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* Create an instance of Critters with custom options.
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* The `.process()` method can be called repeatedly to re-use this instance and its cache.
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*/
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constructor(options: Options);
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/**
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* Process an HTML document to inline critical CSS from its stylesheets.
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* @param {string} html String containing a full HTML document to be parsed.
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* @returns {string} A modified copy of the provided HTML with critical CSS inlined.
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*/
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process(html: string): Promise<string>;
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/**
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* Read the contents of a file from the specified filesystem or disk.
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* Override this method to customize how stylesheets are loaded.
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*/
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readFile(filename: string): Promise<string> | string;
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/**
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* Given a stylesheet URL, returns the corresponding CSS asset.
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* Overriding this method requires doing your own URL normalization, so it's generally better to override `readFile()`.
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*/
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getCssAsset(href: string): Promise<string | undefined> | string | undefined;
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}
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export interface Options {
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path?: string;
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publicPath?: string;
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external?: boolean;
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inlineThreshold?: number;
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minimumExternalSize?: number;
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pruneSource?: boolean;
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mergeStylesheets?: boolean;
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additionalStylesheets?: string[];
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preload?: 'body' | 'media' | 'swap' | 'js' | 'js-lazy';
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noscriptFallback?: boolean;
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inlineFonts?: boolean;
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preloadFonts?: boolean;
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fonts?: boolean;
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keyframes?: string;
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compress?: boolean;
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logLevel?: 'info' | 'warn' | 'error' | 'trace' | 'debug' | 'silent';
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reduceInlineStyles?: boolean;
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logger?: Logger;
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}
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export interface Logger {
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trace?: (message: string) => void;
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debug?: (message: string) => void;
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info?: (message: string) => void;
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warn?: (message: string) => void;
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error?: (message: string) => void;
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}
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