Make tests compatible with Node.js 12 and prerelease versions (#197)

* make version check work with prerelease versions

semver.satisfies does not match a prerelease version against a
non-prerelease one, e.g. 12.0.0-pre does not match >= 10. Use a regex
match to workaround this fact.

* make tests compatible with Node.js 12

In Node.js 12, the formatting of console arguments will change slightly.
Previously, a string other than the first argument was formatted using
single quotes if the first argument was non-string. Now, quotes are
never added regardless of position of a string argument.

To make test compatible in all Node.js versions, I work around by
ensuring the first argument to console.log is a string which prevents
the quotes from being added on older versions of Node.js.

Ref: nodejs/node#23162

* restart travis

test/compress/evaluate.js

@@ -1406,12 +1406,12 @@ self_comparison_1: {
     }
     input: {
         var o = { n: NaN };
-        console.log(o.n == o.n, o.n === o.n, o.n != o.n, o.n !== o.n, typeof o.n);
+        console.log(typeof o.n, o.n == o.n, o.n === o.n, o.n != o.n, o.n !== o.n);
     }
     expect: {
-        console.log(false, false, true, true, "number");
+        console.log("number", false, false, true, true);
     }
-    expect_stdout: "false false true true 'number'"
+    expect_stdout: "number false false true true"
 }
 
 self_comparison_2: {
@@ -1426,12 +1426,12 @@ self_comparison_2: {
     }
     input: {
         var o = { n: NaN };
-        console.log(o.n == o.n, o.n === o.n, o.n != o.n, o.n !== o.n, typeof o.n);
+        console.log(typeof o.n, o.n == o.n, o.n === o.n, o.n != o.n, o.n !== o.n);
     }
     expect: {
-        console.log(false, false, true, true, "number");
+        console.log("number", false, false, true, true);
     }
-    expect_stdout: "false false true true 'number'"
+    expect_stdout: "number false false true true"
 }
 
 issue_2535_1: {

test/compress/reduce_vars.js

@@ -2724,19 +2724,19 @@ issue_1814_2: {
         !function() {
             var b = a + 1;
             !function(a) {
-                console.log(a++, b);
+                console.log(b, a++);
             }(0);
         }();
     }
     expect: {
         const a = "32";
         !function() {
             !function(a) {
-                console.log(a++, "321");
+                console.log("321", a++);
             }(0);
         }();
     }
-    expect_stdout: "0 '321'"
+    expect_stdout: "321 0"
 }
 
 try_abort: {

test/compress/string-literal.js

@@ -15,14 +15,14 @@ issue_1929: {
             return s.split(/[\\/]/);
         }
         var r = f("A/B\\C\\D/E\\F");
-        console.log(r.length, r[5], r[4], r[3], r[2], r[1], r[0]);
+        console.log(r[5], r[4], r[3], r[2], r[1], r[0], r.length);
     }
     expect: {
         function f(s) {
             return s.split(/[\\/]/);
         }
         var r = f("A/B\\C\\D/E\\F");
-        console.log(r.length, r[5], r[4], r[3], r[2], r[1], r[0]);
+        console.log(r[5], r[4], r[3], r[2], r[1], r[0], r.length);
     }
-    expect_stdout: "6 'F' 'E' 'D' 'C' 'B' 'A'"
+    expect_stdout: "F E D C B A 6"
 }

tools/colorless-console.js

@@ -1,8 +1,6 @@
 "use strict"
 
-var semver = require("semver");
-
-if (semver.satisfies(process.version, ">=10")) {
+if (Number((/([0-9]+)\./.exec(process.version) || [])[1]) >= 10) {
     var Console = require("console").Console;
     global.console = new Console({
         stdout: process.stdout,