Install in the Browser

[elf-pavlik]

i would like to experiment with it in: https://github.com/apollo-ng/dspace-client
do you just need to write instructions in README or current code doesn't run in browsers?

steps from levelgraph/levelgraph-n3#2

• testing with zuul
• testing Travis + Sauce Labs
• browserified version in ./build/
• register with bower and add bower.json
• update README

[mcollina]

The current code runs just fine in the browser where LevelGraph can run.
I'm lazy in providing some good instruction in how to make the build.
LevelGraph-jsonld is browserify-compatible, just as levelgraph. Are you
comfortable with Browserify? In case, if you prepare a PR with the
instructions, I'll merge it.
Otherwise, I'll try to write some docs later this week.

[elf-pavlik]

roger! if I figure it on my own, I'll make a PR :)
we also currently use AMD so I might investigate this direction first...

[mcollina]

Browserify can be used to create amd-compatible modules. You want to
package both levelgraph and levelgraph-jsonld in a single build.

Let me know if you need help!

[elf-pavlik]

i tried adding it to project using browserify, regular levelgraph works fine but levelgraph-jsonld gives me browserify error:

Warning: Cannot find module 'canvas'

fast grep shows some 'canvas' stuff going on in levelgraph->jsonld->jsdom depenency...

jsonld.js/js/request.js tries

var jsdom = require('jsdom');

explaining:

// skip RDFa parsing if is libs missing

in my case i need jsonld without any support for RDFa!

@dlongley i wonder if we can extract something lighter for using as dependency in levelgraph-jsonld ?

[mcollina]

You are right, json-ld.js is not compatible with browserify.

If you look at: https://github.com/digitalbazaar/jsonld.js/blob/master/js/jsonld.js#L38-L55, it seems the JSON-LD thinks that it is in node while it isn't.
We need to add a browser directive to jsonld.js to instruct browserify not to bundle jsdom at all. Have a look at: https://gist.github.com/shtylman/4339901

I think something similar will do:

browser: {
  "jsdom": false
}

Looking at the JSON-LD library the RDFa stuff seems out of place, and maybe it should belong to a different library, like jsonld-rdfa.js, but that is out of the scope of this issue.

[dlongley]

I've cc'd @davidlehn on this issue since he has worked on that part of the jsonld.js code (related to RDFa).

[davidlehn]

FYI, that "browser" info gist changed locations: https://gist.github.com/defunctzombie/4339901

[elf-pavlik]

@mcollina i'll push working version to a branch here later today...
if i add to 'test/mocha.opts' line --check-leaks then test on current master fail with

Error: global leak detected: rval

if you could take a look at it then we would heave working version with all tests passing in the browser by the end of the day 😄

[mcollina]

I don't have time today, I'll check tomorrow.
If you prepare a PR for a new version I'll revise that.

Il martedì 28 gennaio 2014, ☮ elf Pavlik ☮ notifications@github.com ha
scritto:

@mcollina https://github.com/mcollina i'll push working version to a
branch here later today...
if i add to 'test/mocha.opts' line --check-leaks then test on current
master fail with

Error: global leak detected: rval

if you could take a look at it then we would heave working version with
all tests passing in the browser by the end of the day [image: 😄]

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/3#issuecomment-33473331
.

[elf-pavlik]

ok! i may need to merge #16 before making this pull request because i already rebased browserify work to include it...

[dlongley]

Have you guys tried the "noParse" option with browserify when including jsonld.js? It seems like it would get the job done. If that doesn't work, have you tried ignorify?

[mcollina]

noparse is only from the command line for client-based stuff like jquery, and the main principle behind the browserify/node modules is that they should be 'self-contained'. I do not want to mandate special options for everything to work, it should 'just work'.

ignorify is super-old (2 years ago) and it is a web middleware.

[elf-pavlik]

done in #23