解决webpack4+升级webpack5+ vue-pdf不可用问题

# vue-pdf vue.js pdf viewer is a package for Vue that enables you to display and view PDF's easily via vue components. ## Install via NPM/Yarn ```bash npm install vue-pdf ``` ```bash yarn add vue-pdf ``` ## Example - basic ```vue <template> <pdf src="./path/to/static/relativity.pdf"></pdf> </template> <script> import pdf from 'vue-pdf' export default { components: { pdf } } ``` ## Demo [vue-pdf demo on jsfiddle](https://jsfiddle.net/fossfiddler/5k4ptmqg/145/) _TBD: fix the demo_ ## Browser support Same browser support as [Vue.js 2](https://github.com/vuejs/vue/blob/dev/README.md) ## Note since v2.x, the script is exported as esm. ## API ### Props #### :src <sup>String / Object - default: ''<sup> The url of the given pdf. `src` may also be a `string|TypedArray|DocumentInitParameters|PDFDataRangeTransport` for more details, see [`PDFJS.getDocument()`](https://github.com/mozilla/pdf.js/blob/8ff1fbe7f819513e7d0023df961e3d223b35aefa/src/display/api.js#L117). #### :page <sup>Number - default: 1<sup> The page number to display. #### :rotate <sup>Number - default: 0<sup> The page rotation in degrees, only multiple of 90 are valid. EG: 90, 180, 270, 360, ... ### Events #### @password <sup>(updatePassword, reason)<sup> * `updatePassword`: The function to call with the pdf password. * `reason`: the reason why this function is called `'NEED_PASSWORD'` or `'INCORRECT_PASSWORD'` #### @progress <sup>Number<sup> Document loading progress. Range [0, 1]. #### @loaded Triggers when the document is loaded. #### @page-loaded <sup>Number<sup> Triggers when a page is loaded. #### @num-pages <sup>Number<sup> The sum of all pages from the given pdf. #### @error <sup>Object<sup> Triggers when an error occurs. #### @link-clicked <sup>Number<sup> Triggers when an internal link is clicked ### Public methods #### print(dpi, pageList) * _experimental_ * * `dpi`: the print resolution of the document (try 100). * `pageList`: the list (array) of pages to print. ### Public static methods #### createLoadingTask(src[, options]) * `src`: see `:src` prop * `options`: an object of options. This function creates a PDFJS loading task that can be used and reused as `:src` property. The loading task is a promise that resolves with the PDFJS pdf document that exposes the `numPages` property (see example below). **beware:** when the component is destroyed, the object returned by `createLoadingTask()` become invalid. Supported options: * onPassword: Callback that's called when a password protected PDF is being opened. * onProgress: Callback return loading progress. * withCredentials: Wheter or not to send cookies in the fetch request. ## Examples ##### Example - current page / page count ```vue <template> <div> {{currentPage}} / {{pageCount}} <pdf src="https://cdn.mozilla.net/pdfjs/tracemonkey.pdf" @num-pages="pageCount = $event" @page-loaded="currentPage = $event" ></pdf> </div> </template> <script> import pdf from 'vue-pdf' export default { components: { pdf }, data() { return { currentPage: 0, pageCount: 0, } } } </script> ``` ##### Example - display multiple pages of the same pdf document ```vue <template> <div> <pdf v-for="i in numPages" :key="i" :src="src" :page="i" style="display: inline-block; width: 25%" ></pdf> </div> </template> <script> import pdf from 'vue-pdf' var loadingTask = pdf.createLoadingTask('https://cdn.mozilla.net/pdfjs/tracemonkey.pdf'); export default { components: { pdf }, data() { return { src: loadingTask, numPages: undefined, } }, mounted() { this.src.promise.then(pdf => { this.numPages = pdf.numPages; }); } } </script> ``` ##### Example - print all pages ```vue <template> <button @click="$refs.myPdfComponent.print()">print</button> <pdf ref="myPdfComponent" src="https://cdn.mozilla.net/pdfjs/tracemonkey.pdf"></pdf> </template> ``` ##### Example - print multiple pages ```vue <template> <button @click="$refs.myPdfComponent.print(100, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14])">print</button> <pdf ref="myPdfComponent" src="https://cdn.mozilla.net/pdfjs/tracemonkey.pdf"></pdf> </template> ``` ##### Example - get text content ```vue <template> <div> <button @click="logContent" > log content </button> <pdf ref="myPdfComponent" src="https://cdn.mozilla.net/pdfjs/tracemonkey.pdf" ></pdf> </div> </template> <script> import pdf from 'vue-pdf' export default { components: { pdf }, methods: { logContent() { this.$refs.myPdfComponent.pdf.forEachPage(function(page) { return page.getTextContent() .then(function(content) { var text = content.items.map(item => item.str); console.log(text); }) }); } } } </script> ``` ##### Example - complete ```vue <template> <div> <input type="checkbox" v-model="show"> <select v-model="src" style="width: 30em"> <option v-for="item in pdfList" :value="item" v-text="item"></option> </select> <input v-model.number="page" type="number" style="width: 5em"> /{{numPages}} <button @click="rotate += 90">&#x27F3;</button> <button @click="rotate -= 90">&#x27F2;</button> <button @click="$refs.pdf.print()">print</button> <div style="width: 50%"> <div v-if="loadedRatio > 0 && loadedRatio < 1" style="background-color: green; color: white; text-align: center" :style="{ width: loadedRatio * 100 + '%' }">{{ Math.floor(loadedRatio * 100) }}%</div> <pdf v-if="show" ref="pdf" style="border: 1px solid red" :src="src" :page="page" :rotate="rotate" @password="password" @progress="loadedRatio = $event" @error="error" @num-pages="numPages = $event" @link-clicked="page = $event"></pdf> </div> </div> </template> <script> import pdf from 'vue-pdf' export default { components: { pdf: pdf }, data () { return { show: true, pdfList: [ '', 'https://cdn.mozilla.net/pdfjs/tracemonkey.pdf', 'https://cdn.rawgit.com/mozilla/pdf.js/c6e8ca86/test/pdfs/freeculture.pdf', 'https://cdn.rawgit.com/mozilla/pdf.js/c6e8ca86/test/pdfs/annotation-link-text-popup.pdf', 'https://cdn.rawgit.com/mozilla/pdf.js/c6e8ca86/test/pdfs/calrgb.pdf', 'https://cdn.rawgit.com/sayanee/angularjs-pdf/68066e85/example/pdf/relativity.protected.pdf', 'data:application/pdf;base64,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', ], src:'', loadedRatio: 0, page: 1, numPages: 0, rotate: 0, } }, methods: { password: function(updatePassword, reason) { updatePassword(prompt('password is "test"')); }, error: function(err) {