@uppy/aws-s3: do not expose internal `assertHost` method (#5200)

packages/@uppy/aws-s3/src/index.ts

@@ -409,8 +409,7 @@ export default class AwsS3Multipart<
     }
   }
 
-  // TODO: make this a private method in the next major
-  assertHost(method: string): void {
+  #assertHost(method: string): void {
     if (!this.opts.companionUrl) {
       throw new Error(
         `Expected a \`companionUrl\` option containing a Companion address, or if you are not using Companion, a custom \`${method}\` implementation.`,
@@ -422,7 +421,7 @@ export default class AwsS3Multipart<
     file: UppyFile<M, B>,
     signal?: AbortSignal,
   ): Promise<UploadResult> {
-    this.assertHost('createMultipartUpload')
+    this.#assertHost('createMultipartUpload')
     throwIfAborted(signal)
 
     const allowedMetaFields = getAllowedMetaFields(
@@ -450,7 +449,7 @@ export default class AwsS3Multipart<
     oldSignal?: AbortSignal,
   ): Promise<AwsS3Part[]> {
     signal ??= oldSignal // eslint-disable-line no-param-reassign
-    this.assertHost('listParts')
+    this.#assertHost('listParts')
     throwIfAborted(signal)
 
     const filename = encodeURIComponent(key)
@@ -467,7 +466,7 @@ export default class AwsS3Multipart<
     oldSignal?: AbortSignal,
   ): Promise<B> {
     signal ??= oldSignal // eslint-disable-line no-param-reassign
-    this.assertHost('completeMultipartUpload')
+    this.#assertHost('completeMultipartUpload')
     throwIfAborted(signal)
 
     const filename = encodeURIComponent(key)
@@ -489,7 +488,7 @@ export default class AwsS3Multipart<
     if (this.#cachedTemporaryCredentials == null) {
       // We do not await it just yet, so concurrent calls do not try to override it:
       if (this.opts.getTemporarySecurityCredentials === true) {
-        this.assertHost('getTemporarySecurityCredentials')
+        this.#assertHost('getTemporarySecurityCredentials')
         this.#cachedTemporaryCredentials = this.#client
           .get<AwsS3STSResponse>('s3/sts', options)
           .then(assertServerError)
@@ -552,7 +551,7 @@ export default class AwsS3Multipart<
     file: UppyFile<M, B>,
     { uploadId, key, partNumber, signal }: SignPartOptions,
   ): Promise<AwsS3UploadParameters> {
-    this.assertHost('signPart')
+    this.#assertHost('signPart')
     throwIfAborted(signal)
 
     if (uploadId == null || key == null || partNumber == null) {
@@ -575,7 +574,7 @@ export default class AwsS3Multipart<
     { key, uploadId, signal }: UploadResultWithSignal,
     // eslint-disable-next-line @typescript-eslint/no-unused-vars
   ): Promise<void> {
-    this.assertHost('abortMultipartUpload')
+    this.#assertHost('abortMultipartUpload')
 
     const filename = encodeURIComponent(key)
     const uploadIdEnc = encodeURIComponent(uploadId)