WIP: use .pvm file

[jeswr]

Generation of the .pvm is now working; yet to wire it up to actually use it.

[jeswr]

#20 (comment) can now be reproduced by running the following on e070aae

npm i
npm run eye:pvm:test

[jeswr]

@josd I've tried to have a bit of a look into what is going wrong in #21 (comment) but unfortunately I don't really have enough knowledge of pvm formats to get that far with it. If you know how to fix this please go ahead and do so; otherwise let's jump in a call when you're online to discuss.

[jeswr]

@josd This is now working 🥳 with the following performance results so we are now able to initialise SWIPL and EYE in 18% of the time it took before switching to the use of .pvm. In other words, this is a 5x speed up

Testing performance of socrates query using eye.pl
Initialise SWIPL        : 139.427ms
Load and consult EYE    : 479.871ms
Load data.n3            : 0.076ms
Load query.n3           : 0.021ms
Execute query           : 7.311ms

Testing performance of socrates query using eye.pvm
Initialise SWIPL with EYE image : 115.429ms
Load data.n3            : 0.089ms
Load query.n3           : 0.029ms
Execute query           : 9.2ms

All that is left to do on this PR is clean up the API and add some documentation - which I will do later today.

---

The other metric to note is the following file sizes

-rw-rw-r--  1 jesse jesse   344K Jan  8 17:45 eye.pl.js
-rw-rw-r--  1 jesse jesse   701K Jan  8 17:45 eye.pvm.js
-rw-rw-r--  1 jesse jesse 10429K Jan  8 17:45 swipl-bundled.temp.js

So it would be very useful if we could find ways of further compressing the pvm and bundle files.

[jeswr]

Ok - the pvm is down to a reasonable size

344K Jan  8 20:30 eye.pl.js
452K Jan  8 20:30 eye.pvm.js
10429K Jan  8 20:30 swipl-bundled.temp.js

[jeswr]

🎉 This PR is included in version 1.14.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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