fix(integrity): should have changed the error code before. oops

BREAKING CHANGE: EBADCHECKSUM -> EINTEGRITY for verification errors

README.md

@@ -345,7 +345,7 @@ representation that [`ssri.parse`](#parse) can handle.
 or an error happens with `stream`, the Promise will be rejected.
 
 If the Promise is rejected because verification failed, the returned error will
-have `err.code` as `EBADCHECKSUM`.
+have `err.code` as `EINTEGRITY`.
 
 If `opts.size` is given, it will be matched against the stream size. An error
 with `err.code` `EBADSIZE` will be returned by a rejection if the expected size
@@ -378,7 +378,7 @@ ssri.checkStream(
 ssri.checkStream(
   fs.createReadStream('index.js'),
   'sha1-BaDDigEST'
-) // -> Promise<Error<{code: 'EBADCHECKSUM'}>>
+) // -> Promise<Error<{code: 'EINTEGRITY'}>>
 ```
 
 #### <a name="integrity-stream"></a> `> integrityStream(sri, [opts]) -> IntegrityStream`
@@ -398,7 +398,7 @@ If `opts.integrity` is passed in, it should be an `integrity` value understood
 by [`parse`](#parse) that the stream will check the data against. If
 verification succeeds, the integrity stream will emit a `verified` event whose
 value is a single `Hash` object that is the one that succeeded verification. If
-verification fails, the stream will error with an `EBADCHECKSUM` error code.
+verification fails, the stream will error with an `EINTEGRITY` error code.
 
 If `opts.size` is given, it will be matched against the stream size. An error
 with `err.code` `EBADSIZE` will be emitted by the stream if the expected size

index.js

@@ -258,7 +258,7 @@ function integrityStream (opts) {
         stream.emit('error', err)
       } else if (opts.integrity && !match) {
         const err = new Error(`${sri} integrity checksum failed when using ${algorithm}`)
-        err.code = 'EBADCHECKSUM'
+        err.code = 'EINTEGRITY'
         err.found = newSri
         err.expected = digests
         err.algorithm = algorithm

test/check.js

@@ -127,7 +127,7 @@ test('checkStream', t => {
     ).then(() => {
       throw new Error('unexpected success')
     }, err => {
-      t.equal(err.code, 'EBADCHECKSUM', 'checksum failure rejects the promise')
+      t.equal(err.code, 'EINTEGRITY', 'checksum failure rejects the promise')
     })
   }).then(() => {
     return ssri.checkStream(fileStream(), [