报错问题

通过npm安装pdfMake后，在.vue文件里面调用如下：

import "pdfmake/build/pdfmake";
import "pdfmake/build/vfs_fonts";
export default {
    data() {
        return {
        };
    },
    created(){
        this.pdfTest();
    },
    methods: {
        pdfTest(){
            var docDefinition = { content: 'This is an sample PDF printed with pdfMake' };
            console.log(pdfMake.vfs);
            pdfMake.createPdf(docDefinition).open();
        }
    }
}

发现无法生成PDF，并且报错：

[Vue warn]: Error in created hook: “File ‘Roboto-Regular.ttf’ not found in virtual file system”

File ‘Roboto-Regular.ttf’ not found in virtual file system

解决方法

通过console.log(pdfMake.vfs);打印log来看，vfs为空，应该是vfs_fonts.js里面的方法没有执行，打开vfs_fonts.js文件，将this.pdfMake修改为pdfMake：

this.pdfMake = this.pdfMake || {}; this.pdfMake.vfs = {...}

改为：

pdfMake = pdfMake || {}; pdfMake.vfs = {...}

然后就解决了。