fix: remove error chain

go.mod

@@ -12,7 +12,6 @@ require (
 require (
 	github.com/asticode/go-astikit v0.42.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/g8rswimmer/error-chain v1.0.0 // indirect
 	github.com/go-test/deep v1.1.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect

go.sum

@@ -10,8 +10,6 @@ github.com/asticode/go-astits v1.13.0/go.mod h1:QSHmknZ51pf6KJdHKZHJTLlMegIrhega
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/g8rswimmer/error-chain v1.0.0 h1:WnwnunlvqtGPHVHmBfbmUyAgrtag8Y6nNpwLWmtSYOQ=
-github.com/g8rswimmer/error-chain v1.0.0/go.mod h1:XPJ/brUsL7yzc5VRlIxtf9GvoUqnOKVI9fg2MB5DWx8=
 github.com/go-test/deep v1.0.8/go.mod h1:5C2ZWiW0ErCdrYzpqxLbTX7MG14M9iiw8DgHncVwcsE=
 github.com/go-test/deep v1.1.0 h1:WOcxcdHcvdgThNXjw0t76K42FXTU7HpNQWHpA2HHNlg=
 github.com/go-test/deep v1.1.0/go.mod h1:5C2ZWiW0ErCdrYzpqxLbTX7MG14M9iiw8DgHncVwcsE=

internal/parser.go

@@ -13,7 +13,6 @@ import (
 	"github.com/Comcast/gots/v2/psi"
 	"github.com/Comcast/gots/v2/scte35"
 	"github.com/asticode/go-astits"
-	chain "github.com/g8rswimmer/error-chain"
 )
 
 func ParseAll(ctx context.Context, w io.Writer, f io.Reader, o Options) error {
@@ -256,22 +255,22 @@ func ParseSCTE35(ctx context.Context, w io.Writer, f io.Reader, o Options) error
 func ParseInfoAndSCTE35(ctx context.Context, w io.Writer, f io.Reader, o Options) error {
 	var out1, out2 bytes.Buffer
 	_, err := CopyToAll(f, &out1, &out2)
-	ec := chain.New()
 	if err != nil {
-		ec.Add(errors.New("failed to copy input"))
+		return errors.New("failed to copy input stream")
 	}
-
 	f1 := strings.NewReader(out1.String())
 	infoErr := ParseInfo(ctx, w, f1, o)
+	if infoErr != nil {
+		return infoErr
+	}
+
 	f2 := strings.NewReader(out2.String())
 	scteErr := ParseSCTE35(ctx, w, f2, o)
-	if infoErr == nil && scteErr == nil {
-		return nil
+	if scteErr != nil {
+		return scteErr
 	}
 
-	ec.Add(infoErr)
-	ec.Add(scteErr)
-	return ec
+	return nil
 }
 
 func CopyToAll(rd io.Reader, wrs ...io.Writer) (int64, error) {