1 files changed, 36 insertions, 0 deletions
diff --git a/cli/flags.rs b/cli/flags.rs
index 6c58238de..537e768f2 100644
--- a/cli/flags.rs
+++ b/cli/flags.rs
@@ -57,6 +57,7 @@ pub enum DenoSubcommand {
     files: Vec<String>,
     ignore: Vec<String>,
     rules: bool,
+    json: bool,
   },
   Repl,
   Run {
@@ -636,10 +637,12 @@ fn lint_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
     None => vec![],
   };
   let rules = matches.is_present("rules");
+  let json = matches.is_present("json");
   flags.subcommand = DenoSubcommand::Lint {
     files,
     rules,
     ignore,
+    json,
   };
 }
 
@@ -1008,6 +1011,9 @@ fn lint_subcommand<'a, 'b>() -> App<'a, 'b> {
   deno lint --unstable
   deno lint --unstable myfile1.ts myfile2.js
 
+Print result as JSON:
+  deno lint --unstable --json
+
 List available rules:
   deno lint --unstable --rules
 
@@ -1042,6 +1048,12 @@ Ignore linting a file by adding an ignore comment at the top of the file:
         .help("Ignore linting particular source files."),
     )
     .arg(
+      Arg::with_name("json")
+        .long("json")
+        .help("Output lint result in JSON format.")
+        .takes_value(false),
+    )
+    .arg(
       Arg::with_name("files")
         .takes_value(true)
         .multiple(true)
@@ -1761,6 +1773,7 @@ mod tests {
         subcommand: DenoSubcommand::Lint {
           files: vec!["script_1.ts".to_string(), "script_2.ts".to_string()],
           rules: false,
+          json: false,
           ignore: vec![],
         },
         unstable: true,
@@ -1780,6 +1793,7 @@ mod tests {
         subcommand: DenoSubcommand::Lint {
           files: vec![],
           rules: false,
+          json: false,
           ignore: svec!["script_1.ts", "script_2.ts"],
         },
         unstable: true,
@@ -1794,6 +1808,28 @@ mod tests {
         subcommand: DenoSubcommand::Lint {
           files: vec![],
           rules: true,
+          json: false,
+          ignore: vec![],
+        },
+        unstable: true,
+        ..Flags::default()
+      }
+    );
+
+    let r = flags_from_vec_safe(svec![
+      "deno",
+      "lint",
+      "--unstable",
+      "--json",
+      "script_1.ts"
+    ]);
+    assert_eq!(
+      r.unwrap(),
+      Flags {
+        subcommand: DenoSubcommand::Lint {
+          files: vec!["script_1.ts".to_string()],
+          rules: false,
+          json: true,
           ignore: vec![],
         },
         unstable: true,