feat: Tidy initialisation with better warnings

[benjackwhite]

Changes

Needs #767

We get a lot of issues with people initialising PostHog incorrectly, sometimes due to think an env var is set when it isn't.
I started trying to add this and the spaghetti code of initialisation caused such a headache that I felt it was time we improved this.

Big change so we should validate this heavily but this:

• Removes the multiple states that create a lib, instead using PostHog class as the basis and moving all initialisation into the two methods
• Simplifies the global state side of things
• Still keeps the snippet specific stuff but now it is relatively straightforward acting on the initialised PostHog instance rather than a hacked global override

TODO

• Check the multiple paths
• Check we have tests for these paths and they all pass
• Ensure pre-loaded calls still work

Checklist

• Tests for new code (see advice on the tests we use)
• Accounted for the impact of any changes across different browsers

[github-actions]

Size Change: -3.36 kB (0%)

Total Size: 749 kB

Filename	Size	Change
dist/array.full.js	176 kB	-880 B (0%)
dist/array.js	117 kB	-869 B (-1%)
dist/es.js	117 kB	-804 B (-1%)
dist/module.js	118 kB	-804 B (-1%)

ℹ️ View Unchanged

Filename	Size
dist/exception-autocapture.js	12 kB
dist/recorder-v2.js	104 kB
dist/recorder.js	58.4 kB
dist/surveys.js	46.8 kB

_{compressed-size-action}

[posthog-bot]

This PR hasn't seen activity in a week! Should it be merged, closed, or further worked on? If you want to keep it open, post a comment or remove the stale label – otherwise this will be closed in another week.

[posthog-bot]

This PR hasn't seen activity in a week! Should it be merged, closed, or further worked on? If you want to keep it open, post a comment or remove the stale label – otherwise this will be closed in another week.

[posthog-bot]

This PR was closed due to lack of activity. Feel free to reopen if it's still relevant.

[pauldambra]

looks good to me...

fixed a couple of linting issues, but when I ran yalc publish loads of tests failed :'(

[posthog-bot]

This PR hasn't seen activity in a week! Should it be merged, closed, or further worked on? If you want to keep it open, post a comment or remove the stale label – otherwise this will be closed in another week.

[posthog-bot]

This PR was closed due to lack of activity. Feel free to reopen if it's still relevant.

[posthog-bot]

This PR hasn't seen activity in a week! Should it be merged, closed, or further worked on? If you want to keep it open, post a comment or remove the stale label – otherwise this will be closed in another week.

[posthog-bot]

This PR hasn't seen activity in a week! Should it be merged, closed, or further worked on? If you want to keep it open, post a comment or remove the stale label – otherwise this will be closed in another week.

[posthog-bot]

This PR hasn't seen activity in a week! Should it be merged, closed, or further worked on? If you want to keep it open, post a comment or remove the stale label – otherwise this will be closed in another week.

[posthog-bot]

This PR hasn't seen activity in a week! Should it be merged, closed, or further worked on? If you want to keep it open, post a comment or remove the stale label – otherwise this will be closed in another week.

[posthog-bot]

This PR hasn't seen activity in a week! Should it be merged, closed, or further worked on? If you want to keep it open, post a comment or remove the stale label – otherwise this will be closed in another week.

[posthog-bot]

This PR hasn't seen activity in a week! Should it be merged, closed, or further worked on? If you want to keep it open, post a comment or remove the stale label – otherwise this will be closed in another week.

[posthog-bot]

This PR hasn't seen activity in a week! Should it be merged, closed, or further worked on? If you want to keep it open, post a comment or remove the stale label – otherwise this will be closed in another week.

[posthog-bot]

This PR was closed due to lack of activity. Feel free to reopen if it's still relevant.