Lodash: Refactor core data away from _.map()
#47189
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tyxla
added
[Type] Performance
tyxla
requested review from
Mamaduka,
sgomes,
aristath,
jsnajdr,
swissspidy,
flootr,
chad1008,
ntsekouras,
fabiankaegy and
brookewp
tyxla
commented
Jan 16, 2023
| @@ -213,7 +213,7 @@ async function loadPostTypeEntities() { | |||
| const postTypes = await apiFetch( { | |||
| path: '/wp/v2/types?context=view', | |||
| } ); | |||
| return map( postTypes, ( postType, name ) => { | |||
| return Object.entries( postTypes ?? {} ).map( ( [ name, postType ] ) => { | |||
There was a problem hiding this comment.
postTypes could be null, so adding nullish coalescing:
gutenberg/packages/core-data/src/selectors.ts
Line 519 in f558281
| @@ -251,7 +251,7 @@ async function loadTaxonomyEntities() { | |||
| const taxonomies = await apiFetch( { | |||
| path: '/wp/v2/taxonomies?context=view', | |||
| } ); | |||
| return map( taxonomies, ( taxonomy, name ) => { | |||
| return Object.entries( taxonomies ?? {} ).map( ( [ name, taxonomy ] ) => { | |||
There was a problem hiding this comment.
taxonomies could be null, so adding nullish coalescing:
gutenberg/packages/core-data/src/selectors.ts
Line 519 in f558281
| @@ -230,7 +230,7 @@ const receiveQueries = compose( [ | |||
|
|
|||
| return getMergedItemIds( | |||
| state || [], | |||
| map( action.items, key ), | |||
| action.items.map( ( item ) => item[ key ] ), | |||
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Always an array:
| action.users, | ||
| ( user ) => user.id | ||
| ), | ||
| [ action.queryID ]: action.users.map( ( user ) => user.id ), |
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Always an array:
| @@ -147,9 +147,9 @@ export function getCurrentUser( state: State ): ET.User< 'edit' > { | |||
| */ | |||
| export const getUserQueryResults = createSelector( | |||
| ( state: State, queryID: string ): ET.User< 'edit' >[] => { | |||
| const queryResults = state.users.queries[ queryID ]; | |||
| const queryResults = state.users.queries[ queryID ] ?? []; | |||
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Could be undefined if we don't have such a query, therefore coalescing to an empty array. That handles the nullish scenario for .map() below.
Mamaduka
approved these changes
Jan 16, 2023
|
Size Change: +21 B (0%) Total Size: 1.33 MB
ℹ️ View Unchanged
|
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What?
This PR removes Lodash's
_.map()from the core data package. There are just a few usages and conversion is pretty straightforward.Why?
Lodash is known to unnecessarily inflate the bundle size of packages, and in most cases, it can be replaced with native language functionality. See these for more information and rationale:
@wordpress/api-fetchpackage haslodashas a dependency #39495How?
We're using
Array.prototype.map()instead, with nullish coalescing when necessary, and withObject.entries()to convert from an object when necessary.Testing Instructions