diff --git a/Cargo.lock b/Cargo.lock
index 24947568..3f5a2f8d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -35,7 +35,7 @@ version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "backtrace-sys 0.1.24 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-demangle 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -85,13 +85,13 @@ dependencies = [
 
 [[package]]
 name = "cargo_metadata"
-version = "0.6.0"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.32 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -102,7 +102,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cfg-if"
-version = "0.1.5"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -181,7 +181,7 @@ dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.9.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.9.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "schannel 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "socket2 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -194,8 +194,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "libz-sys 1.0.23 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.9.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libz-sys 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.9.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "vcpkg 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -211,22 +211,22 @@ dependencies = [
 
 [[package]]
 name = "failure"
-version = "0.1.2"
+version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "backtrace 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "failure_derive 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure_derive 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "failure_derive"
-version = "0.1.2"
+version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.14.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "synstructure 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "synstructure 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -234,19 +234,19 @@ name = "filetime"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "flate2"
-version = "1.0.3"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "miniz-sys 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "miniz_oxide_c_api 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miniz-sys 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miniz_oxide_c_api 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -282,10 +282,10 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "backtrace 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "failure 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "os_type 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "termcolor 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -308,7 +308,7 @@ name = "isatty"
 version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -348,7 +348,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libz-sys"
-version = "1.0.23"
+version = "1.0.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -366,19 +366,35 @@ dependencies = [
  "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "log"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "log"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "memchr"
 version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "miniz-sys"
-version = "0.1.10"
+version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -387,22 +403,21 @@ dependencies = [
 
 [[package]]
 name = "miniz_oxide"
-version = "0.1.3"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "adler32 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "miniz_oxide_c_api"
-version = "0.1.3"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "crc 1.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "miniz_oxide 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miniz_oxide 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -429,15 +444,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "openssl"
-version = "0.10.12"
+version = "0.10.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.9.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.9.39 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -447,7 +462,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "openssl-src"
-version = "110.0.7+1.1.0i"
+version = "111.0.1+1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -455,12 +470,12 @@ dependencies = [
 
 [[package]]
 name = "openssl-sys"
-version = "0.9.36"
+version = "0.9.39"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-src 110.0.7+1.1.0i (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-src 111.0.1+1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "vcpkg 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -481,6 +496,25 @@ dependencies = [
  "stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "parity-wasm"
+version = "0.27.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "byteorder 1.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "parking_lot"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot_core 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "parking_lot"
 version = "0.6.4"
@@ -490,6 +524,17 @@ dependencies = [
  "parking_lot_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "parking_lot_core"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "parking_lot_core"
 version = "0.3.1"
@@ -662,7 +707,7 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -672,17 +717,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "serde"
-version = "1.0.79"
+version = "1.0.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "serde_derive"
-version = "1.0.79"
+version = "1.0.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.13 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -692,7 +737,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "itoa 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ryu 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -735,7 +780,7 @@ name = "socket2"
 version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -753,36 +798,26 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "structopt"
-version = "0.2.11"
+version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "structopt-derive 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "structopt-derive 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "structopt-derive"
-version = "0.2.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.9 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "syn"
-version = "0.14.9"
+version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.13 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "syn"
-version = "0.15.9"
+version = "0.15.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -792,12 +827,12 @@ dependencies = [
 
 [[package]]
 name = "synstructure"
-version = "0.9.0"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.14.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -831,7 +866,7 @@ name = "tempfile"
 version = "3.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -905,7 +940,7 @@ name = "toml"
 version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -941,7 +976,7 @@ name = "uuid"
 version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -970,36 +1005,47 @@ name = "wasm-pack"
 version = "0.5.1"
 dependencies = [
  "atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "cargo_metadata 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cargo_metadata 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "console 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "curl 0.4.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "failure 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "flate2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "flate2 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "human-panic 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "indicatif 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl 0.10.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl 0.10.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog 2.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog-async 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog-term 2.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "structopt 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "structopt 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "tar 0.4.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempfile 3.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-snip 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "which 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "zip 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "wasm-snip"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "failure 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-wasm 0.27.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "which"
 version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "failure 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1054,7 +1100,7 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bzip2 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "flate2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "flate2 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "msdos_time 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "podio 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1072,9 +1118,9 @@ dependencies = [
 "checksum byteorder 1.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "90492c5858dd7d2e78691cfb89f90d273a2800fc11d98f60786e5d87e2f83781"
 "checksum bzip2 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "42b7c3cbf0fa9c1b82308d57191728ca0256cb821220f4e2fd410a72ade26e3b"
 "checksum bzip2-sys 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "2c5162604199bbb17690ede847eaa6120a3f33d5ab4dcc8e7c25b16d849ae79b"
-"checksum cargo_metadata 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2d6809b327f87369e6f3651efd2c5a96c49847a3ed2559477ecba79014751ee1"
+"checksum cargo_metadata 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1aaa1a9856ae2d188340526d0986feb6899c9ad11c5dfd73453c784fed6e373d"
 "checksum cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)" = "f159dfd43363c4d08055a07703eb7a3406b0dac4d0584d96965a3262db3c9d16"
-"checksum cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "0c4e7bb64a8ebb0d856483e1e682ea3422f883c5f5615a90d51a2c82fe87fdd3"
+"checksum cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "082bb9b28e00d3c9d39cc03e64ce4cea0f1bb9b3fde493f0cbc008472d22bdf4"
 "checksum chrono 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "45912881121cb26fad7c38c17ba7daa18764771836b34fab7d3fbd93ed633878"
 "checksum clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b957d88f4b6a63b9d70d5f454ac8011819c6efa7727858f458ab71c756ce2d3e"
 "checksum clicolors-control 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1f84dec9bc083ce2503908cd305af98bd363da6f54bf8d4bf0ac14ee749ad5d1"
@@ -1084,10 +1130,10 @@ dependencies = [
 "checksum curl 0.4.18 (registry+https://github.com/rust-lang/crates.io-index)" = "a9e5285b49b44401518c947d3b808d14d99a538a6c9ffb3ec0205c11f9fc4389"
 "checksum curl-sys 0.4.13 (registry+https://github.com/rust-lang/crates.io-index)" = "08459503c415173da1ce6b41036a37b8bfdd86af46d45abb9964d4c61fe670ef"
 "checksum error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "07e791d3be96241c77c43846b665ef1384606da2cd2a48730abe606a12906e02"
-"checksum failure 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7efb22686e4a466b1ec1a15c2898f91fa9cb340452496dca654032de20ff95b9"
-"checksum failure_derive 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "946d0e98a50d9831f5d589038d2ca7f8f455b1c21028c0db0e84116a12696426"
+"checksum failure 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "6dd377bcc1b1b7ce911967e3ec24fa19c3224394ec05b54aa7b083d498341ac7"
+"checksum failure_derive 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "64c2d913fe8ed3b6c6518eedf4538255b989945c14c2a7d5cbff62a5e2120596"
 "checksum filetime 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "da4b9849e77b13195302c174324b5ba73eec9b236b24c221a61000daefb95c5f"
-"checksum flate2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "4af030962d89d62aa52cd9492083b1cd9b2d1a77764878102a6c0f86b4d5444d"
+"checksum flate2 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "3b0c7353385f92079524de3b7116cf99d73947c08a7472774e9b3b04bff3b901"
 "checksum foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
 "checksum foreign-types-shared 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
 "checksum fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
@@ -1100,22 +1146,27 @@ dependencies = [
 "checksum lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "76f033c7ad61445c5b347c7382dd1237847eb1bce590fe50365dcb33d546be73"
 "checksum lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ca488b89a5657b0a2ecd45b95609b3e848cf1755da332a0da46e2b2b1cb371a7"
 "checksum libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)" = "76e3a3ef172f1a0b9a9ff0dd1491ae5e6c948b94479a3021819ba7d860c8645d"
-"checksum libz-sys 1.0.23 (registry+https://github.com/rust-lang/crates.io-index)" = "c7bdca442aa002a930e6eb2a71916cabe46d91ffec8df66db0abfb1bc83469ab"
+"checksum libz-sys 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)" = "2eb5e43362e38e2bca2fd5f5134c4d4564a23a5c28e9b95411652021a8675ebe"
 "checksum lock_api 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "775751a3e69bde4df9b38dd00a1b5d6ac13791e4223d4a0506577f0dd27cfb7a"
+"checksum log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e19e8d5c34a3e0e2223db8e060f9e8264aeeb5c5fc64a4ee9965c062211c024b"
+"checksum log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)" = "d4fcce5fa49cc693c312001daf1d13411c4a5283796bac1084299ea3e567113f"
 "checksum memchr 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4b3629fe9fdbff6daa6c33b90f7c08355c1aca05a3d01fa8063b822fcf185f3b"
-"checksum miniz-sys 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "609ce024854aeb19a0ef7567d348aaa5a746b32fb72e336df7fcc16869d7e2b4"
-"checksum miniz_oxide 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "9ba430291c9d6cedae28bcd2d49d1c32fc57d60cd49086646c5dd5673a870eb5"
-"checksum miniz_oxide_c_api 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "5a5b8234d6103ebfba71e29786da4608540f862de5ce980a1c94f86a40ca0d51"
+"checksum miniz-sys 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "0300eafb20369952951699b68243ab4334f4b10a88f411c221d444b36c40e649"
+"checksum miniz_oxide 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5ad30a47319c16cde58d0314f5d98202a80c9083b5f61178457403dfb14e509c"
+"checksum miniz_oxide_c_api 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "28edaef377517fd9fe3e085c37d892ce7acd1fbeab9239c5a36eec352d8a8b7e"
 "checksum msdos_time 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "aad9dfe950c057b1bfe9c1f2aa51583a8468ef2a5baba2ebbe06d775efeb7729"
 "checksum num-integer 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)" = "e83d528d2677f0518c570baf2b7abdcf0cd2d248860b68507bdcb3e91d4c0cea"
 "checksum num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "0b3a5d7cc97d6d30d8b9bc8fa19bf45349ffe46241e8816f50f62f6d6aaabee1"
-"checksum openssl 0.10.12 (registry+https://github.com/rust-lang/crates.io-index)" = "5e2e79eede055813a3ac52fb3915caf8e1c9da2dec1587871aec9f6f7b48508d"
+"checksum openssl 0.10.15 (registry+https://github.com/rust-lang/crates.io-index)" = "5e1309181cdcbdb51bc3b6bedb33dfac2a83b3d585033d3f6d9e22e8c1928613"
 "checksum openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "77af24da69f9d9341038eba93a073b1fdaaa1b788221b00a69bce9e762cb32de"
-"checksum openssl-src 110.0.7+1.1.0i (registry+https://github.com/rust-lang/crates.io-index)" = "c02d15268b7d1b3f0c83a2358f3d981139b54079440f1e2a29c60c1818ad5516"
-"checksum openssl-sys 0.9.36 (registry+https://github.com/rust-lang/crates.io-index)" = "409d77eeb492a1aebd6eb322b2ee72ff7c7496b4434d98b3bf8be038755de65e"
+"checksum openssl-src 111.0.1+1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d1edaed888fd85a54a2646bf02992931ddefdda3b1a748fc79f088a8db27fcbe"
+"checksum openssl-sys 0.9.39 (registry+https://github.com/rust-lang/crates.io-index)" = "278c1ad40a89aa1e741a1eed089a2f60b18fab8089c3139b542140fc7d674106"
 "checksum os_type 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7edc011af0ae98b7f88cf7e4a83b70a54a75d2b8cb013d6efd02e5956207e9eb"
 "checksum owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "cdf84f41639e037b484f93433aa3897863b561ed65c6e59c7073d7c561710f37"
+"checksum parity-wasm 0.27.6 (registry+https://github.com/rust-lang/crates.io-index)" = "bd4dc02a80a0315b109e48992c46942c79bcdb8fac416dd575d330ed9ced6cbd"
+"checksum parking_lot 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "d4d05f1349491390b1730afba60bb20d55761bef489a954546b58b4b34e1e2ac"
 "checksum parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)" = "f0802bff09003b291ba756dc7e79313e51cc31667e94afbe847def490424cde5"
+"checksum parking_lot_core 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "4db1a8ccf734a7bce794cc19b3df06ed87ab2f3907036b693c68f56b4d4537fa"
 "checksum parking_lot_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ad7f7e6ebdc79edff6fdcb87a55b620174f7a989e3eb31b65231f4af57f00b8c"
 "checksum pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)" = "676e8eb2b1b4c9043511a9b7bea0915320d7e502b0a079fb03f9635a5252b18c"
 "checksum podio 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "780fb4b6698bbf9cf2444ea5d22411cef2953f0824b98f33cf454ec5615645bd"
@@ -1139,8 +1190,8 @@ dependencies = [
 "checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
-"checksum serde 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)" = "84257ccd054dc351472528c8587b4de2dbf0dc0fe2e634030c1a90bfdacebaa9"
-"checksum serde_derive 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)" = "31569d901045afbff7a9479f793177fe9259819aff10ab4f89ef69bbc5f567fe"
+"checksum serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)" = "15c141fc7027dd265a47c090bf864cf62b42c4d228bbcf4e51a0c9e2b0d3f7ef"
+"checksum serde_derive 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)" = "225de307c6302bec3898c51ca302fc94a7a1697ef0845fcee6448f33c032249c"
 "checksum serde_json 1.0.32 (registry+https://github.com/rust-lang/crates.io-index)" = "43344e7ce05d0d8280c5940cabb4964bea626aa58b1ec0e8c73fa2a8512a38ce"
 "checksum slog 2.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1e1a2eec401952cd7b12a84ea120e2d57281329940c3f93c2bf04f462539508e"
 "checksum slog-async 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e544d16c6b230d84c866662fe55e31aacfca6ae71e6fc49ae9a311cb379bfc2f"
@@ -1149,11 +1200,10 @@ dependencies = [
 "checksum socket2 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "c4d11a52082057d87cb5caa31ad812f4504b97ab44732cd8359df2e9ff9f48e7"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"
-"checksum structopt 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "ca85f2c9a5a1e2d5ac686fc0be48e40f8ad803f5bbe31f692ff71eb2dd8aad45"
-"checksum structopt-derive 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "1383e5db585da799a5c4acc496c5c868e18bf82e658c00c75cc91038fa26b55f"
-"checksum syn 0.14.9 (registry+https://github.com/rust-lang/crates.io-index)" = "261ae9ecaa397c42b960649561949d69311f08eeaea86a65696e6e46517cf741"
-"checksum syn 0.15.9 (registry+https://github.com/rust-lang/crates.io-index)" = "b10ee269228fb723234fce98e9aac0eaed2bd5f1ad2f6930e8d5b93f04445a1a"
-"checksum synstructure 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "85bb9b7550d063ea184027c9b8c20ac167cd36d3e06b3a40bceb9d746dc1a7b7"
+"checksum structopt 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)" = "d77af7242f18c40fd19cb270985930f239ee1646cfb482050bbae9da1d18743b"
+"checksum structopt-derive 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)" = "17ff01fe96de9d16e7372ae5f19dd7ece2c703b51043c3db9ea27f9e393ea311"
+"checksum syn 0.15.13 (registry+https://github.com/rust-lang/crates.io-index)" = "7b4439ee8325b4e4b57e59309c3724c9a4478eaeb4eb094b6f3fac180a3b2876"
+"checksum synstructure 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ec37f4fab4bafaf6b5621c1d54e6aa5d4d059a8f84929e87abfdd7f9f04c6db2"
 "checksum take_mut 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f764005d11ee5f36500a149ace24e00e3da98b0158b3e2d53a7495660d3f4d60"
 "checksum tar 0.4.17 (registry+https://github.com/rust-lang/crates.io-index)" = "83b0d14b53dbfd62681933fadd651e815f99e6084b649e049ab99296e05ab3de"
 "checksum tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "15f2b5fb00ccdf689e0149d1b1b3c03fead81c2b37735d812fa8bddbbf41b6d8"
@@ -1176,6 +1226,7 @@ dependencies = [
 "checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 "checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
 "checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
+"checksum wasm-snip 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "9842155b391bc839aa21e1a9262512b854ad25f9ffbbf4541f4e917927d92a82"
 "checksum which 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "49c4f580e93079b70ac522e7bdebbe1568c8afa7d8d05ee534ee737ca37d2f51"
 "checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
 "checksum winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "92c1eb33641e276cfa214a0522acad57be5c56b10cb348b3c5117db75f3ac4b0"
diff --git a/Cargo.toml b/Cargo.toml
index 56392cfe..091d18cc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -32,6 +32,8 @@ tar = "0.4.16"
 toml = "0.4"
 which = "2.0.0"
 zip = "0.4.2"
+wasm-snip = { version = "0.1.3", default-features = false }
+parity-wasm = "0.27.0"
 
 [dev-dependencies]
 tempfile = "3"
diff --git a/src/command/build.rs b/src/command/build.rs
index be1de723..508ac624 100644
--- a/src/command/build.rs
+++ b/src/command/build.rs
@@ -311,4 +311,20 @@ impl Build {
         info!(&log, "wasm bindings were built at {:#?}.", &self.out_dir);
         Ok(())
     }
+
+    fn set_run_wasm_snip(&mut self, step: &Step, log: &Logger) -> Result<(), Error> {
+        let msg = format!("{}Running WASM-opt...", emoji::RUNNER);
+        PBAR.step(step, &msg);
+
+        snip::set_run_wasm_snip(
+            // FIXME(csmoe) add wasm_snip_config() in build
+            self.wasm_snip_config(),
+        )?;
+        info!(
+            &log,
+            "wasm bindings were snipped at {:#?}.",
+            &self.crate_path.join("pkg")
+        );
+        Ok(())
+    }
 }
diff --git a/src/command/mod.rs b/src/command/mod.rs
index ee418da4..3bc175a0 100644
--- a/src/command/mod.rs
+++ b/src/command/mod.rs
@@ -3,9 +3,17 @@
 pub mod build;
 mod login;
 mod pack;
+<<<<<<< HEAD
 /// Data structures and functions for publishing a package.
 pub mod publish;
 pub mod test;
+mod snip;
+||||||| merged common ancestors
+mod publish;
+mod snip;
+=======
+mod publish;
+>>>>>>> build(snip): hidde snip into build
 pub mod utils;
 
 use self::build::{Build, BuildOptions};
@@ -13,6 +21,7 @@ use self::login::login;
 use self::pack::pack;
 use self::publish::{access::Access, publish};
 use self::test::{Test, TestOptions};
+use self::snip::{snip, SnipOpitons};
 use error::Error;
 use slog::Logger;
 use std::path::PathBuf;
@@ -81,6 +90,13 @@ pub enum Command {
     #[structopt(name = "test")]
     /// 👩‍🔬  test your wasm!
     Test(TestOptions),
+
+    #[structopt(name = "snip")]
+    /// Replace a wasm function with an `unreachable`.
+
+    #[structopt(name = "snip")]
+    /// Replace a wasm function with an `unreachable`.
+    Snip(SnipOptions),
 }
 
 /// Run a command with the given logger!
@@ -123,6 +139,10 @@ pub fn run_wasm_pack(command: Command, log: &Logger) -> result::Result<(), failu
             info!(&log, "Running test command...");
             Test::try_from_opts(test_opts).and_then(|t| t.run(&log))
         }
+        Command::Snip(opts) => {
+            info!(&log, "Running snip command...");
+            snip(opts)
+        }
     };
 
     match status {
diff --git a/src/error.rs b/src/error.rs
index 4fcc513c..15ed08dc 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -1,6 +1,9 @@
 //! Code related to error handling for wasm-pack
 use curl;
 use serde_json;
+use failure;
+use parity_wasm;
+use serde_json;
 use std::borrow::Cow;
 use std::io;
 use std::process::ExitStatus;
@@ -212,3 +215,23 @@ impl From<toml::de::Error> for Error {
         Error::SerdeToml(e)
     }
 }
+
+/// wasm-snip occurs error when trying to print out the result.
+impl From<parity_wasm::elements::Error> for Error {
+    fn from(error: parity_wasm::elements::Error) -> Self {
+        Error::Cli {
+            message: "There was an wasm-snip output Error".to_owned(),
+            stderr: format!("{}", error),
+        }
+    }
+}
+
+/// wasm-snip occurs error when working with inputs.
+impl From<failure::Error> for Error {
+    fn from(error: failure::Error) -> Self {
+        Error::Cli {
+            message: "There was an wasm-snip Error".to_owned(),
+            stderr: format!("{}", error),
+        }
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
index ed2e390e..8c5143dc 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -19,12 +19,14 @@ extern crate serde_json;
 extern crate structopt;
 #[macro_use]
 extern crate slog;
+extern crate parity_wasm;
 extern crate slog_async;
 extern crate slog_term;
 extern crate tar;
 extern crate toml;
 extern crate which;
 extern crate zip;
+extern crate wasm_snip;
 
 pub mod binaries;
 pub mod bindgen;
@@ -39,8 +41,13 @@ pub mod manifest;
 pub mod npm;
 pub mod progressbar;
 pub mod readme;
+<<<<<<< HEAD
 pub mod target;
 pub mod test;
+||||||| merged common ancestors
+=======
+pub mod snip;
+>>>>>>> build(snip): hidde snip into build
 
 use progressbar::ProgressOutput;
 
diff --git a/src/logger.rs b/src/logger.rs
index f8f6cc4c..c841e029 100644
--- a/src/logger.rs
+++ b/src/logger.rs
@@ -41,6 +41,7 @@ fn log_file_path(cmd: &Command) -> PathBuf {
         Command::Publish { path, access: _ } => path,
         Command::Test(test_opts) => &test_opts.path,
         Command::Login { .. } => &None,
+        Command::Snip(opts) => &opts.output,
     };
 
     // If the path exists attempt to use it, if not default to the current directory
diff --git a/src/snip.rs b/src/snip.rs
new file mode 100644
index 00000000..0cbef628
--- /dev/null
+++ b/src/snip.rs
@@ -0,0 +1,42 @@
+use error::Error;
+use parity_wasm::elements::{self, Serialize};
+use wasm_snip;
+
+#[derive(Clone, Debug, StructOpt)]
+pub struct WasmSnipConfig {
+    input: String,
+    #[structopt(long = "output", short = "o")]
+    pub(crate) output: Option<String>,
+    functions: Vec<String>,
+    #[structopt(long = "pattern", short = "p")]
+    patterns: Vec<String>,
+    #[structopt(long = "snip_rust_fmt_code")]
+    snip_rust_fmt_code: bool,
+    #[structopt(long = "snip_rust_panicking_code")]
+    snip_rust_panicking_code: bool,
+}
+
+impl Into<wasm_snip::Options> for WasmSnipConfig {
+    fn into(self) -> wasm_snip::Options {
+        wasm_snip::Options {
+            input: ::std::path::PathBuf::from(self.input),
+            functions: self.functions,
+            patterns: self.patterns,
+            snip_rust_fmt_code: self.snip_rust_fmt_code,
+            snip_rust_panicking_code: self.snip_rust_panicking_code,
+        }
+    }
+}
+
+pub(crate) fn run_wasm_snip(opts: WasmSnipConfig) -> Result<(), Error> {
+    let module = wasm_snip::snip(opts.clone().into())?;
+
+    if let Some(output) = opts.output {
+        elements::serialize_to_file(output, module)?;
+    } else {
+        let stdout = ::std::io::stdout();
+        let mut stdout = stdout.lock();
+        module.serialize(&mut stdout)?;
+    }
+    Ok(())
+}