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Checkout: Convert useCreatePaymentMethods to TypeScript #50965

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merged 5 commits into from
Mar 11, 2021
Merged

Checkout: Convert useCreatePaymentMethods to TypeScript #50965

merged 5 commits into from
Mar 11, 2021

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sirbrillig
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@sirbrillig sirbrillig commented Mar 10, 2021 •
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Changes proposed in this Pull Request

#50723 took the first step toward converting payment method creation to TypeScript by converting useCreateExistingCards. This PR converts the rest of the functions.

Testing instructions

This should not have any effect on checkout as the changes should be almost entirely TypeScript (I've commented on the few actual code changes in the PR if you want to check them). Visit checkout and verify that the expected payment methods are available, particularly the new credit card method and PayPal. If they show up at all, then this should be safe.

@sirbrillig sirbrillig requested a review from a team as a code owner March 10, 2021 23:08
@matticbot matticbot added the [Status] Needs Review The PR is ready for review. This also triggers e2e canary tests and wp-desktop tests automatically. label Mar 10, 2021
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Test live: https://calypso.live/?branch=update/use-create-payment-methods-typescript

@sirbrillig sirbrillig self-assigned this Mar 10, 2021
@sirbrillig sirbrillig added [Estimate] 1 [Feature] Checkout The checkout screen and process for purchases made on WordPress.com. labels Mar 10, 2021
sirbrillig
sirbrillig commented Mar 10, 2021
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client/my-sites/checkout/composite-checkout/hooks/use-create-payment-methods/index.ts
@@ -395,7 +496,6 @@ export default function useCreatePaymentMethods( {

const existingCardMethods = useCreateExistingCards( {
storedCards,
stripeConfiguration,
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This argument is not used, so I'm removing it here. One of the benefits of type safety.

sirbrillig
sirbrillig commented Mar 10, 2021
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client/my-sites/checkout/composite-checkout/hooks/use-create-payment-methods/index.ts
@@ -416,5 +516,5 @@ export default function useCreatePaymentMethods( {
epsMethod,
wechatMethod,
bancontactMethod,
].filter( Boolean );
].filter( doesValueExist );
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doesValueExist (poorly named; it should be something like isValueNotFalsy) is a TypeScript-safe way to filter out null values.

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I think isTruthy is the most specific description of how it works (!!)

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matticbot commented Mar 10, 2021 •
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Here is how your PR affects size of JS and CSS bundles shipped to the user's browser:

Sections (~14 bytes added 📈 [gzipped])

name            parsed_size           gzip_size
site-purchases        +64 B  (+0.0%)      +13 B  (+0.0%)
purchases             +64 B  (+0.0%)      +13 B  (+0.0%)
checkout              +48 B  (+0.0%)      +14 B  (+0.0%)

Sections contain code specific for a given set of routes. Is downloaded and parsed only when a particular route is navigated to.

Async-loaded Components (~12 bytes added 📈 [gzipped])

name                                             parsed_size           gzip_size
async-load-calypso-blocks-editor-checkout-modal        +48 B  (+0.0%)      +12 B  (+0.0%)

React components that are loaded lazily, when a certain part of UI is displayed for the first time.

Legend

What is parsed and gzip size?

Parsed Size: Uncompressed size of the JS and CSS files. This much code needs to be parsed and stored in memory.
Gzip Size: Compressed size of the JS and CSS files. This much data needs to be downloaded over network.

Generated by performance advisor bot at iscalypsofastyet.com.

@pottedmeat pottedmeat self-requested a review March 11, 2021 16:21
nbloomf
nbloomf approved these changes Mar 11, 2021
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Works great! I completed a paypal purchase with no problems.

pottedmeat
pottedmeat reviewed Mar 11, 2021
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client/my-sites/checkout/composite-checkout/hooks/use-create-payment-methods/index.ts Outdated

export { useCreateExistingCards };

export function useCreatePayPal( { labelText = null } = {} ) {
export function useCreatePayPal( {
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I think this is called from client/me/purchases/manage-purchases/change-payment-method/use-create-assignable-payment-methods.ts with an object?

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Should TranslateResult from 'i18n-calypso' be added as a type for labelText?

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@sirbrillig sirbrillig Mar 11, 2021 •
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That's correct. Is this syntax wrong? I found it hard to say "this can accept an optional object and that object can have an optional labelText property".

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Should TranslateResult from 'i18n-calypso' be added as a type for labelText?

Ah, actually I think we should leave it as a string, but that's a good point. That use should be modified to cast those translate results to a string. I'll add that in.

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Can we move this type of stuff to an assertion function to perform the cast?

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I adjusted things around. How does it look now?

pottedmeat
pottedmeat reviewed Mar 11, 2021
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client/my-sites/checkout/composite-checkout/hooks/use-create-payment-methods/index.ts
stripe: Stripe | null;
shouldUseEbanx: boolean;
shouldShowTaxFields?: boolean;
activePayButtonText?: string | undefined;
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Some uses of activePayButtonText in non-ts files aren't cast to string.

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Yes, you're right. This is an issue but I'm not super concerned about it here. We'll need to handle those when we convert those files to TS and there will probably be lots of similar issues. I'm not worried because it shouldn't cause any issues as long as the translate() is just producing a string (most uses of translate() do) and not a React component. This will be a lot easier when we start switching to react-i18n which separates the two concepts.

@sirbrillig sirbrillig merged commit 619ee94 into trunk Mar 11, 2021
@sirbrillig sirbrillig deleted the update/use-create-payment-methods-typescript branch March 11, 2021 17:55
@matticbot matticbot removed the [Status] Needs Review The PR is ready for review. This also triggers e2e canary tests and wp-desktop tests automatically. label Mar 11, 2021
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@pottedmeat pottedmeat pottedmeat approved these changes

@nbloomf nbloomf nbloomf approved these changes

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[Estimate] 1 [Feature] Checkout The checkout screen and process for purchases made on WordPress.com.
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