feat(typescript): support TSMinusToken

package.json

@@ -55,7 +55,7 @@
     "resolve": "1.5.0",
     "semver": "5.4.1",
     "string-width": "2.1.1",
-    "typescript": "2.8.0-dev.20180222",
+    "typescript": "2.8.0-rc",
     "typescript-eslint-parser": "14.0.0",
     "unicode-regex": "1.0.1",
     "unified": "6.1.6"

src/language-js/printer-estree.js

@@ -2722,13 +2722,20 @@ function printPathNoParens(path, options, print, args) {
             concat([
               options.bracketSpacing ? line : softline,
               n.readonlyToken
-                ? concat([path.call(print, "readonlyToken"), " "])
+                ? concat([
+                    n.readonlyToken.type === "TSMinusToken"
+                      ? "-readonly"
+                      : "readonly",
+                    " "
+                  ])
                 : "",
               printTypeScriptModifiers(path, options, print),
               "[",
               path.call(print, "typeParameter"),
               "]",
-              n.questionToken ? "?" : "",
+              n.questionToken
+                ? n.questionToken.type === "TSMinusToken" ? "-?" : "?"
+                : "",
               ": ",
               path.call(print, "typeAnnotation")
             ])

tests/typescript/custom/modifiers/__snapshots__/jsfmt.spec.js.snap

@@ -1,5 +1,14 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`minustoken.ts 1`] = `
+type MutableAndRequired<T> = {
+    -readonly [P in keyof T]-?: T[P]
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+type MutableAndRequired<T> = { -readonly [P in keyof T]-?: T[P] };
+
+`;
+
 exports[`question.ts 1`] = `
 var x: {
     [A in keyof B]?: any;

tests/typescript/custom/modifiers/minustoken.ts

@@ -0,0 +1,3 @@
+type MutableAndRequired<T> = {
+    -readonly [P in keyof T]-?: T[P]
+}

yarn.lock

@@ -4784,9 +4784,9 @@ typescript-eslint-parser@14.0.0:
     lodash.unescape "4.0.1"
     semver "5.5.0"
 
-typescript@2.8.0-dev.20180222:
-  version "2.8.0-dev.20180222"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.8.0-dev.20180222.tgz#50ee5fd5c76f2c9817e949803f946d74a559fc01"
+typescript@2.8.0-rc:
+  version "2.8.0-rc"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.8.0-rc.tgz#a0256b7d1d39fb7493ba0403f55e95d31e8bc374"
 
 ua-parser-js@^0.7.9:
   version "0.7.17"