Packages supported by TinyGo

The following table shows all Go standard library packages and whether they can be imported by TinyGo. If they can’t, you can click the ‘no’ link to jump to the explanation why the package cannot be compiled.

Note that the fact they can be imported, does not mean that all functions and types in the program can be used. For example, sometimes using some functions or types of the package will still trigger compiler errors.

Package	Importable
archive/tar	✔ yes
archive/zip	✔ yes
bufio	✔ yes
bytes	✔ yes
compress/bzip2	✔ yes
compress/flate	✔ yes
compress/gzip	✔ yes
compress/lzw	✔ yes
compress/zlib	✔ yes
container/heap	✔ yes
container/list	✔ yes
container/ring	✔ yes
context	✔ yes
crypto	✔ yes
crypto/aes	✔ yes
crypto/cipher	✔ yes
crypto/des	✔ yes
crypto/dsa	✔ yes
crypto/ecdsa	✔ yes
crypto/ed25519	✔ yes
crypto/elliptic	✔ yes
crypto/hmac	✔ yes
crypto/md5	✔ yes
crypto/rand	✔ yes
crypto/rc4	✔ yes
crypto/rsa	✔ yes
crypto/sha1	✔ yes
crypto/sha256	✔ yes
crypto/sha512	✔ yes
crypto/subtle	✔ yes
crypto/tls	✔ yes
crypto/x509	✔ yes
crypto/x509/pkix	✔ yes
database/sql	✔ yes
database/sql/driver	✔ yes
debug/dwarf	✔ yes
debug/elf	✔ yes
debug/gosym	✔ yes
debug/macho	✔ yes
debug/pe	✔ yes
debug/plan9obj	✔ yes
embed	✔ yes
encoding	✔ yes
encoding/ascii85	✔ yes
encoding/asn1	✔ yes
encoding/base32	✔ yes
encoding/base64	✔ yes
encoding/binary	✔ yes
encoding/csv	✔ yes
encoding/gob	✗ no
encoding/hex	✔ yes
encoding/json	✔ yes
encoding/pem	✔ yes
encoding/xml	✗ no
errors	✔ yes
expvar	✗ no
flag	✔ yes
fmt	✔ yes
go/ast	✔ yes
go/build	✗ no
go/build/constraint	✔ yes
go/constant	✔ yes
go/doc	✗ no
go/format	✔ yes
go/importer	✗ no
go/parser	✔ yes
go/printer	✔ yes
go/scanner	✔ yes
go/token	✔ yes
go/types	✔ yes
hash	✔ yes
hash/adler32	✔ yes
hash/crc32	✔ yes
hash/crc64	✔ yes
hash/fnv	✔ yes
hash/maphash	✔ yes
html	✔ yes
html/template	✗ no
image	✔ yes
image/color	✔ yes
image/color/palette	✔ yes
image/draw	✔ yes
image/gif	✔ yes
image/jpeg	✔ yes
image/png	✔ yes
index/suffixarray	✔ yes
io	✔ yes
io/fs	✔ yes
io/ioutil	✔ yes
log	✔ yes
log/syslog	✔ yes
math	✔ yes
math/big	✔ yes
math/bits	✔ yes
math/cmplx	✔ yes
math/rand	✔ yes
mime	✔ yes
mime/multipart	✔ yes
mime/quotedprintable	✔ yes
net	✔ yes
net/http	✗ no
net/http/cgi	✗ no
net/http/cookiejar	✗ no
net/http/fcgi	✗ no
net/http/httptest	✗ no
net/http/httptrace	✔ yes
net/http/httputil	✗ no
net/http/pprof	✗ no
net/mail	✔ yes
net/rpc	✗ no
net/rpc/jsonrpc	✗ no
net/smtp	✔ yes
net/textproto	✔ yes
net/url	✔ yes
os	✔ yes
os/exec	✗ no
os/signal	✔ yes
os/user	✗ no
path	✔ yes
path/filepath	✔ yes
plugin	✔ yes
reflect	✔ yes
regexp	✔ yes
regexp/syntax	✔ yes
sort	✔ yes
strconv	✔ yes
strings	✔ yes
sync	✔ yes
sync/atomic	✔ yes
syscall	✔ yes
syscall/js	✔ yes
testing	✔ yes
testing/fstest	✔ yes
testing/iotest	✔ yes
testing/quick	✗ no
text/scanner	✔ yes
text/tabwriter	✔ yes
text/template	✗ no
text/template/parse	✔ yes
time	✔ yes
time/tzdata	✔ yes
unicode	✔ yes
unicode/utf16	✔ yes
unicode/utf8	✔ yes
unsafe	✔ yes

encoding/gob

The compiler gave the following error when this package was imported:

# encoding/gob
/home/ron/.gvm/gos/go1.16.3/src/encoding/gob/decode.go:562:21: MakeMapWithSize not declared by package reflect
/home/ron/.gvm/gos/go1.16.3/src/encoding/gob/decode.go:1118:30: srt.FieldByName undefined (type reflect.Type has no field or method FieldByName)
/home/ron/.gvm/gos/go1.16.3/src/encoding/gob/encode.go:643:70: f.Index undefined (type reflect.StructField has no field or method Index)
/home/ron/.gvm/gos/go1.16.3/src/encoding/gob/type.go:867:9: rt.PkgPath undefined (type reflect.Type has no field or method PkgPath)
/home/ron/.gvm/gos/go1.16.3/src/encoding/gob/type.go:870:21: rt.PkgPath undefined (type reflect.Type has no field or method PkgPath)