fix(compiler): improve error diagnostic for invalid string concat

[Chriscbr]

Adds a hint so if it looks like the user might want to try concatenating a non-string value onto a string, the error will suggest using string interpolation to coerce the other value into a string.

In the future we should also support directly converting values to strings: #741

Checklist

• Title matches Winglang's style guide
• Description explains motivation and solution
• Tests added (always)
• Docs updated (only required for features)
• Added pr/e2e-full label if this feature requires end-to-end testing

By submitting this pull request, I confirm that my contribution is made under the terms of the Wing Cloud Contribution License.

[github-actions]

Thanks for opening this pull request! 🎉
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If you need any assistance, don't hesitate to ping the relevant owner over Discord.

Topic	Owner
Wing SDK and standard library	@chriscbr
Wing Console	@skyrpex
Wing compiler and language design	@chriscbr
VSCode extension and language server	@chriscbr
Wing CLI	@chriscbr
Documentation	@boyney123
Examples	@boyney123
Wing Playground	@skyrpex

[monadabot]

Console preview environment is available at https://wing-console-pr-7025.fly.dev 🚀

Last Updated (UTC) 2024-08-19 16:16

[monadabot]

Benchmarks

Comparison to Baseline ⬜🟥⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜

Benchmark	Before	After	Change
version	56ms±0.82	55ms±0.56	0ms (-0.8%)⬜
hello_world.test.w -t sim	403ms±2.85	416ms±14.7	+13ms (+3.32%)🟥
hello_world.test.w -t tf-aws	1489ms±5.24	1491ms±12	+2ms (+0.13%)⬜
jsii_big.test.w -t sim	2941ms±16.18	2953ms±13.61	+12ms (+0.41%)⬜
jsii_big.test.w -t tf-aws	3158ms±12.07	3160ms±15.41	+3ms (+0.09%)⬜
functions_1.test.w -t sim	407ms±7.02	407ms±5.49	0ms (-0.07%)⬜
functions_1.test.w -t tf-aws	852ms±6.92	862ms±7.62	+10ms (+1.17%)⬜
empty.test.w -t sim	368ms±3.04	368ms±3.18	+0ms (+0.09%)⬜
empty.test.w -t tf-aws	610ms±4.77	611ms±4.07	+1ms (+0.09%)⬜
functions_10.test.w -t sim	499ms±15.21	501ms±17.49	+3ms (+0.53%)⬜
functions_10.test.w -t tf-aws	2180ms±15.81	2169ms±17.24	-10ms (-0.47%)⬜
jsii_small.test.w -t sim	376ms±4.84	377ms±2.41	+0ms (+0.1%)⬜
jsii_small.test.w -t tf-aws	620ms±3.28	619ms±3.75	0ms (-0.08%)⬜

⬜ Within 1.5 standard deviations
🟩 Faster, Above 1.5 standard deviations
🟥 Slower, Above 1.5 standard deviations

Benchmarks may vary outside of normal expectations, especially when running in GitHub Actions CI.

Results

name	mean	min	max	moe	sd
version	55ms	54ms	57ms	1ms	1ms
hello_world.test.w -t sim	416ms	400ms	459ms	15ms	21ms
hello_world.test.w -t tf-aws	1491ms	1470ms	1528ms	12ms	17ms
jsii_big.test.w -t sim	2953ms	2918ms	2979ms	14ms	19ms
jsii_big.test.w -t tf-aws	3160ms	3129ms	3192ms	15ms	22ms
functions_1.test.w -t sim	407ms	395ms	421ms	5ms	8ms
functions_1.test.w -t tf-aws	862ms	851ms	887ms	8ms	11ms
empty.test.w -t sim	368ms	360ms	375ms	3ms	4ms
empty.test.w -t tf-aws	611ms	598ms	617ms	4ms	6ms
functions_10.test.w -t sim	501ms	436ms	524ms	17ms	24ms
functions_10.test.w -t tf-aws	2169ms	2139ms	2212ms	17ms	24ms
jsii_small.test.w -t sim	377ms	372ms	383ms	2ms	3ms
jsii_small.test.w -t tf-aws	619ms	610ms	627ms	4ms	5ms

Last Updated (UTC) 2024-08-19 16:22

[monadabot]

Congrats! 🚀 This was released in Wing 0.82.8.