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Update: improve error messaging when validating ecmaVersion #421

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merged 3 commits into from
Aug 18, 2019

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kaicataldo
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Inspired by eslint/eslint#12101. This PR enhances the error messaging when validating ecmaVersion to distinguish between when the the value provided is the incorrect data type versus when it's not a valid numeric value.

I labeled this an enhancement since it's not technically a bug fix, but please let me know if you disagree!

@kaicataldo kaicataldo changed the title Enhancement: improve error messaging when validating ecmaVersion Update: improve error messaging when validating ecmaVersion Aug 15, 2019
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Whoops, fixed the commit message 😅

lib/espree.js Outdated Show resolved Hide resolved
@ljharb
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ljharb commented Aug 15, 2019

(fwiw using typeof x === 'string' inline actually hits more optimizations in engines, making it much cheaper than storing the value in a variable and using it twice; nbd tho)

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Cool, useful to know 👍

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@aladdin-add aladdin-add left a comment

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LGTM, thanks!

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@platinumazure platinumazure left a comment

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LGTM, thanks!

@aladdin-add aladdin-add merged commit 9870c55 into master Aug 18, 2019
@aladdin-add aladdin-add deleted the ecmaversion-number-error branch August 18, 2019 00:29
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4 participants