Switch to xxhash for tsbuildinfo hashing (#1511)

Author: jakebailey

go.mod

@@ -7,13 +7,15 @@ require (
 	github.com/go-json-experiment/json v0.0.0-20250725192818-e39067aee2d2
 	github.com/google/go-cmp v0.7.0
 	github.com/peter-evans/patience v0.3.0
+	github.com/zeebo/xxh3 v1.0.2
 	golang.org/x/sync v0.16.0
 	golang.org/x/sys v0.34.0
 	golang.org/x/text v0.27.0
 	gotest.tools/v3 v3.5.2
 )
 
 require (
+	github.com/klauspost/cpuid/v2 v2.0.9 // indirect
 	github.com/matryer/moq v0.5.3 // indirect
 	golang.org/x/mod v0.25.0 // indirect
 	golang.org/x/tools v0.34.0 // indirect

go.sum

@@ -6,6 +6,8 @@ github.com/go-quicktest/qt v1.101.0 h1:O1K29Txy5P2OK0dGo59b7b0LR6wKfIhttaAhHUyn7
 github.com/go-quicktest/qt v1.101.0/go.mod h1:14Bz/f7NwaXPtdYEgzsx46kqSxVwTbzVZsDC26tQJow=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
+github.com/klauspost/cpuid/v2 v2.0.9 h1:lgaqFMSdTdQYdZ04uHyN2d/eKdOMyi2YLSvlQIBFYa4=
+github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
@@ -18,6 +20,10 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ=
 github.com/rogpeppe/go-internal v1.14.1/go.mod h1:MaRKkUm5W0goXpeCfT7UZI6fk/L7L7so1lCWt35ZSgc=
+github.com/zeebo/assert v1.3.0 h1:g7C04CbJuIDKNPFHmsk4hwZDO5O+kntRxzaUoNXj+IQ=
+github.com/zeebo/assert v1.3.0/go.mod h1:Pq9JiuJQpG8JLJdtkwrJESF0Foym2/D9XMU5ciN/wJ0=
+github.com/zeebo/xxh3 v1.0.2 h1:xZmwmqxHZA8AI603jOQ0tMqmBr9lPeFwGg6d+xy9DC0=
+github.com/zeebo/xxh3 v1.0.2/go.mod h1:5NWz9Sef7zIDm2JHfFlcQvNekmcEl9ekUZQQKCYaDcA=
 golang.org/x/mod v0.25.0 h1:n7a+ZbQKQA/Ysbyb0/6IbB1H/X41mKgbhfv7AfG/44w=
 golang.org/x/mod v0.25.0/go.mod h1:IXM97Txy2VM4PJ3gI61r1YEk/gAj6zAHN3AdZt6S9Ww=
 golang.org/x/sync v0.16.0 h1:ycBJEhp9p4vXvUZNszeOq0kGTPghopOL8q0fq3vstxw=

internal/incremental/snapshot.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"encoding/hex"
 	"fmt"
-	"hash/fnv"
 	"maps"
 	"strings"
 	"sync"
@@ -17,6 +16,7 @@ import (
 	"github.com/microsoft/typescript-go/internal/diagnostics"
 	"github.com/microsoft/typescript-go/internal/tsoptions"
 	"github.com/microsoft/typescript-go/internal/tspath"
+	"github.com/zeebo/xxh3"
 )
 
 type fileInfo struct {
@@ -307,9 +307,8 @@ func diagnosticToStringBuilder(diagnostic *ast.Diagnostic, file *ast.SourceFile,
 }
 
 func (s *snapshot) computeHash(text string) string {
-	hasher := fnv.New128a()
-	hasher.Write([]byte(text))
-	hash := hex.EncodeToString(hasher.Sum(nil))
+	hashBytes := xxh3.Hash128([]byte(text)).Bytes()
+	hash := hex.EncodeToString(hashBytes[:])
 	if s.hashWithText {
 		hash += "-" + text
 	}