Unexpected identifier (await/async) using node 6.10.3 64-bit

[atrerice]

server\node_modules\pdfjs\lib\document.js:268
async _startPage() {
^^^^^^^^^^
SyntaxError: Unexpected identifier
at createScript (vm.js:56:10)
at Object.runInThisContext (vm.js:97:10)
at Module._compile (module.js:542:28)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object. (D:\Programming\apps.appliedtechres.com\server\node_modules\pdfjs\lib\index.js:5:20)

[rkusa]

Hi, thanks for reporting your issue. pdfjs requires Node.js >= 7 (or you have to transpile it with e.g. babel)

[atrerice]

var pdf = doc.render() gives an error of: 'doc.render is not a function'.

[rkusa]

Which example are you following? Since 2.0.0-* there is no render() method anymore. An example, as of https://github.com/rkusa/pdfjs/tree/master/docs, is

const doc = new pdf.Document({
  font:    new pdf.Font(require('pdfjs/font/helvetica.json')),
  padding: 10
})
doc.pipe(fs.createWriteStream('output.pdf'))

// render something onto the document

await doc.end()

Edit: probably http://ma.rkusa.st/pdfjs/ , I have to update this page

[atrerice]

I got it from http://ma.rkusa.st/pdfjs/, I will try the example above.

[atrerice]

I need a buffer, I can't create a file on the server I am on. What would you suggest?

[rkusa]

Depends on what you want to do. If it should be send as a HTTP request, I would directly pipe it into the HTTP response to not have to save the whole document in memory first.

Since getting a buffer was not very ergonomic, I've added an API for it, see https://github.com/rkusa/pdfjs/blob/master/docs/document.md#asbuffercallback

(requires to install pdfjs from Github until I release a new version to NPM)

[atrerice]

You are awesome. I will download and use.

[atrerice]

here is my code:

        const doc = new pdf.Document({
            font: new pdf.Font(require('pdfjs/font/Helvetica.json'))
        });
        var text;
        text = doc.text({
            fontSize: 14, lineSpacing: 1.35
        });
        text.add('This is to test pdfjs');
        doc.asBuffer((err, data) => {
            if (err) {
                console.error(err);
            } else {
                fs.writeFileSync('test.pdf', data, { encoding: 'binary' });
            }
        });

I get error:
(node:13108) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 3): TypeError: font.instance is not a function
(node:13108) DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

I'm using node 7.10.0.

[rkusa]

Hm that is strange. Your example works for me. It sounds like it is mixing a never and older version of pdfjs together. Could you maybe try it again with the just published pdfjs@2.0.0-alpha.3?

[atrerice]

Again, thank you. I have the new version installed and no errors.