feat: allow both "lwc" and "engine" sources

[diervo]

Details

Allow both forms:

// legacy
import { Element } form "engine";

// new
import { LightningElement } from "lwc";

Refactored some tests to use the new names

Does this PR introduce a breaking change?

• Yes
• No

[salesforce-best-lwc-internal]

Benchmark results

Base commit: b982bd8 | Target commit: d62db80

lwc-engine-benchmark

table-append-1k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table/append/1k	duration	151.40 (± 4.70 ms)	148.10 (± 4.20 ms)	2.18% 👌

table-clear-1k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table/clear/1k	duration	11.80 (± 0.60 ms)	11.40 (± 0.60 ms)	3.39% 👌

table-create-10k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table/create/10k	duration	848.70 (± 4.30 ms)	854.40 (± 3.20 ms)	-0.67% 👎

table-create-1k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table/create/1k	duration	107.70 (± 1.50 ms)	105.40 (± 1.70 ms)	2.14% 👍

table-update-10th-1k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table/update-10th/1k	duration	92.50 (± 3.70 ms)	83.60 (± 2.80 ms)	9.62% 👍

tablecmp-append-1k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table-component/append/1k	duration	229.90 (± 4.60 ms)	225.20 (± 5.50 ms)	2.04% 👍

tablecmp-clear-1k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table-component/clear/1k	duration	34.95 (± 1.80 ms)	35.10 (± 1.80 ms)	-0.43% 👌

tablecmp-create-10k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table-component/create/10k	duration	1578.40 (± 13.50 ms)	1557.40 (± 10.10 ms)	1.33% 👍

tablecmp-create-1k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table-component/create/1k	duration	177.20 (± 3.60 ms)	172.90 (± 3.10 ms)	2.43% 👍

tablecmp-update-10th-1k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table-component/update-10th/1k	duration	78.05 (± 4.35 ms)	79.10 (± 4.30 ms)	-1.35% 👌

wc-append-1k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table-wc/append/1k	duration	261.30 (± 8.30 ms)	252.80 (± 12.30 ms)	3.25% 👌

wc-clear-1k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table-wc/clear/1k	duration	35.70 (± 1.00 ms)	34.90 (± 1.00 ms)	2.24% 👌

wc-create-10k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table-wc/create/10k	duration	2030.40 (± 9.10 ms)	1968.70 (± 6.20 ms)	3.04% 👍

wc-create-1k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table-wc/create/1k	duration	213.20 (± 4.90 ms)	220.60 (± 3.40 ms)	-3.47% 👎

wc-update-10th-1k	metric	base(b982bd8)	target(d62db80)	trend
benchmark-table-wc/update-10th/1k	duration	77.10 (± 3.50 ms)	75.90 (± 3.20 ms)	1.56% 👌

[diervo]

This file contains the important forward looking changes.