feat(lib): make clap and colored_json optional

Cargo.toml

@@ -22,9 +22,11 @@ version = "3.0.6-alpha.0"
 criterion = "0.3.5"
 
 [dependencies]
-anyhow = "1.0.45"
-clap = { version = "3.0.0-rc.4", features = ["cargo"] }
-colored_json = "2.1.0"
+anyhow = "1.0.51"
+# Mark clap and colored_json as optional.
+# See: https://github.com/rust-lang/cargo/issues/1982
+clap = { version = "3.0.0-rc.7", features = ["cargo"], optional = true }
+colored_json = { version = "2.1.0", optional = true }
 pest = "2.1.3"
 pest_derive = "2.1.0"
 rayon = "1.5.1"
@@ -36,7 +38,11 @@ features = ["attributes", "unstable"]
 [dependencies.serde_json]
 default-features = false
 features = ["preserve_order"]
-version = "1.0.69"
+version = "1.0.73"
+
+# See comment above.
+[features]
+default = ["clap", "colored_json"]
 
 [[bench]]
 harness = false
@@ -50,6 +56,7 @@ path = "src/lib.rs"
 [[bin]]
 name = "jql"
 path = "src/bin.rs"
+required-features = ["clap", "colored_json"]
 
 [profile.release]
 codegen-units = 1

tests/integration.rs

@@ -0,0 +1,12 @@
+#![deny(unsafe_code, nonstandard_style)]
+#![forbid(rust_2018_idioms)]
+
+use jql::walker;
+use serde_json::json;
+
+#[test]
+fn integration() {
+    let json_array = json!([2, 3, 5, 7, 11]);
+
+    assert_eq!(walker(&json_array, Some("[4]")), Ok(json!(11)));
+}