fix: wrong spell (#1902)

src/use-swr.ts

@@ -214,7 +214,7 @@ export const useSWRHandler = <Data = any, Error = any>(
           }
 
           // Start the request and save the timestamp.
-          // Key must be truthly if entering here.
+          // Key must be truthy if entering here.
           FETCH[key] = [
             currentFetcher(fnArg as DefinitelyTruthy<Key>),
             getTimestamp()
@@ -290,7 +290,7 @@ export const useSWRHandler = <Data = any, Error = any>(
           // data and newData are deeply equal
           // it should be safe to broadcast the stale data
           newState.data = stateRef.current.data
-          // At the end of this function, `brocastState` invokes the `onStateUpdate` function,
+          // At the end of this function, `broadcastState` invokes the `onStateUpdate` function,
           // which takes care of avoiding the re-render
         }
 

src/utils/hash.ts

@@ -16,7 +16,7 @@ let counter = 0
 // - Generates short results
 //
 // This is not a serialization function, and the result is not guaranteed to be
-// parsible.
+// parsable.
 export const stableHash = (arg: any): string => {
   const type = typeof arg
   const constructor = arg && arg.constructor

src/utils/mutate.ts

@@ -17,7 +17,7 @@ export const internalMutate = async <Data>(
 ) => {
   const [cache, _key, _data, _opts] = args
 
-  // When passing as a boolean, it's explicitily used to disable/enable
+  // When passing as a boolean, it's explicitly used to disable/enable
   // revalidation.
   const options =
     typeof _opts === 'boolean' ? { revalidate: _opts } : _opts || {}
@@ -30,7 +30,7 @@ export const internalMutate = async <Data>(
   const revalidate = options.revalidate !== false
   const rollbackOnError = options.rollbackOnError !== false
 
-  // Serilaize key
+  // Serialize key
   const [key] = serialize(_key)
   if (!key) return
 

src/utils/serialize.ts

@@ -13,7 +13,7 @@ export const serialize = (key: Key): [string, Key] => {
     }
   }
 
-  // Use the original key as the argument of fether. This can be a stirng or an
+  // Use the original key as the argument of fetcher. This can be a string or an
   // array of values.
   const args = key