npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

@fast-snail/preview

v0.0.3

Published

A preview component that supports previewing office files, pdf, and images.

Downloads

3

Readme

@fast-snail/preview

NPM version NPM downloads

一个文件预览插件

Usage

如果需要预览 xlsx 文件,package.json 中需添加依赖项

使用环境建议 >=es2018 的现代浏览器(待测)

在 vite 中

x-data-spreadsheet 需要

"less": ">=3.0.0",

在 vue-cli 中,webpack5

package.json

"less": ">=3.0.0",
"less-loader": "*", // 10.0.0
"@babel/plugin-transform-private-methods": ">=7.14.5",

同时 babel.config.js 文件添加

module.exports = {
  presets: ['@vue/cli-plugin-babel/preset'], // vue的,如果是别的则添加其他
  plugins: ['@babel/plugin-transform-private-methods'],
};

在其它不兼容环境下使用

请使用 umd 模式,此时上述的配置都可以不用,但会缺少 ts 语法提示

import * as FilePreview from '@fast-snail/preview/preview';
// or import { render } from '@fast-snail/preview/preview';
import '@fast-snail/preview/preview.css';

FilePreview.render('#render', {
  file: 'xxx',
});

如果你的框架不支持 package.json 的 exports

import * as FilePreview from '@fast-snail/preview/dist/umd/preview.min.js';
import '@fast-snail/preview/dist/umd/preview.min.css';

复制 preview.min.js 和 preview.min.css 直接使用

<link rel="stylesheet" href="./preview.min.css" />
<script src="./preview.min.js"></script>
<script>
  // 导出全局变量FilePreview
  FilePreview.render('#render', {
    file,
  });
</script>

使用示例

<input type="file" id="fileInput" />

<!-- 图片预览不需要 -->
<div
  id="render"
  style="margin: auto;  overflow: hidden auto; width: 900px; height: 900px"
></div>
import { render } from '@fast-snail/preview';

const input = document.getElementById('fileInput')!;

input.addEventListener('change', async (e) => {
  const target = e.target as HTMLInputElement;
  const file = target.files?.[0] as File;

  const previewInfo = await render(
    '#render',
    {
      file: URL.createObjectURL(file), // or file
      type: 'pdf', // 不传将自动识别
    },
    {
      // 非必传
      pdf: {
        scale: 1.5,
        loadAll: true,
      },
    },
  );

  //   返回类型还未处理好。后续可能会调整。
  //   is pdf
  //   document.getElementById('pre')?.addEventListener('click', () => {
  //     (previewInfo as any)?.prevPage?.();
  //   });
  //   document.getElementById('next')?.addEventListener('click', () => {
  //     (previewInfo as any)?.nextPage?.();
  //   });
});

Options

render

渲染文件方法

type BigType =
  | 'pdf'
  | 'ppt'
  | 'txt'
  | 'picture'
  | 'word'
  | 'excel'
  | 'video'
  | 'other';

function render(
  element: HTMLElement | string,
  { file, type, filename }: Omit<FileItem, 'contentType'>,
  options?: PreviewInfo,
): Promise<{ type: BigType } & any>;
/**
 * 根据不同文件类型返回不同的值
 * audio、txt、video返回对应的渲染dom
 * picture返回预览viewerjs的实例
 * word返回docx-preview的renderAsync函数返回值
 * pdf返回{
 *  pdf,
 *  nextPage, // 单页渲染时,渲染下一页的方法
 *  prevPage,
 *  jumpPage,
 *  renderAll, // 一次全部渲染的方法
 *  pdfInfo: {
 *    pdfDivWidth, // pdf宽度
 *    pdfPages, // pdf总页数
 *    nowPage, // 当前页码
 *  }
 * }
 * excel返回xs为x-data-spreadsheet的实例
 */

PreviewInfo

type PreviewInfo = {
  pdf?: PdfOptions;
  word?: WordOptions;
  picture?: PictureOptions;
  excel?: ExcelOptions;
  txt?: TxtOptions;
  video?: VideoOptions;
  audio?: AudioOptions;
  fileParsing?: {
    /** 如果本插件渲染不了,是否跳转至微软预览地址 */
    canOffice?: boolean;
    /** 是否显示本插件无法预览 */
    showNoPreview?: boolean;
  };
} & PreviewOptionsOwned;

type PreviewOptionsOwned = {
  /** 成功 */
  success?: (e?: any) => void;
  /** 失败 */
  error?: (e: any) => void;
};

type PdfOptions = {
  // 缩放比例,基础为760px
  scale?: number;
  // 是否一次全部加载
  loadAll?: boolean;
} & PreviewOptionsOwned;

type WordOptions = {
  // npm包docx-preview配置
  styleContainer?: HTMLElement;
  // docx-preview配置
  userOptions?: Partial<Options>;
} & PreviewOptionsOwned;

type ExcelOptions = {
  /** npm包x-data-spreadsheet实例配置 */
  spreadsheet?: Options;
  transfer?: any;
} & PreviewOptionsOwned;

// npm包viewerjs
type PictureOptions = Viewer.Options & PreviewOptionsOwned;

指定类型 render

其它 render 目前只支持传 Blob,如果是视频、图片、音频、文字,则支持 string 类型

  • renderAudio 音频
  • renderExcel xlsx
  • renderPdf pdf
  • renderPicture 图片
  • renderTxt 文本
  • renderVideo 视频
  • renderWord docx
function render(el: HTMLElement, file: Blob | string, options: XXXOptions = {});

fileTypeFromBlob

传入文件 Blob | File,返回文件的类型,包含 ext 和 mime。

getBigType

传入文件类型 mime,返回文件类型大类

"pdf" | "ppt" | "txt" | "picture" | "word" | "excel" | "video" | "other"

getFileInfo

获取文件信息

type FileItem = {
  file: Blob | string;
  contentType?: string | null;
  /** filename or Content-Disposition */
  filename?: string | null;
  /** getBigType返回的类型 */
  type?: string | null;
};

function getFileInfo(
  file: Blob | string,
  filename?: string | null,
  filetype?: string | null,
): Promise<FileItem>;

Development

# install dependencies
$ pnpm install

# develop library by docs demo
$ pnpm start

# build library source code
$ pnpm run build

# build library source code in watch mode
$ pnpm run build:watch

# build docs
$ pnpm run docs:build

# Locally preview the production build.
$ pnpm run docs:preview

# check your project for potential problems
$ pnpm run doctor

LICENSE

MIT