add console.group & console.groupEnd #1363

- add console.group & console.groupEnd function
- add console.group & console.groupEnd test
- fix group when log info contains \n

js/console.ts

@@ -346,15 +346,23 @@ export function stringifyArgs(
  );
  }
  }
- return out.join(" ");
+ let outstr = out.join(" ");
+ if (groupIndent.length !== 0) {
+ if (outstr.indexOf("\n") !== -1) {
+ outstr = outstr.replace(/\n/g, `\n${groupIndent}`);
+ }
+ outstr = groupIndent + outstr;
+ }
+ return outstr;
 }
 
 type PrintFunc = (x: string, isErr?: boolean) => void;
 
 const countMap = new Map<string, number>();
 const timerMap = new Map<string, number>();
 
-/** TODO Do not expose this from "deno". */
+let groupIndent = "";
+
 export class Console {
  constructor(private printFunc: PrintFunc) {}
 
@@ -473,6 +481,18 @@ export class Console {
 
  this.info(`${label}: ${duration}ms`);
  };
+
+ // tslint:disable-next-line:no-any
+ group = (...label: any[]): void => {
+ groupIndent += " ";
+ if (label.length > 0) {
+ this.log(...label);
+ }
+ };
+
+ groupEnd = (): void => {
+ groupIndent = groupIndent.slice(0, groupIndent.length - 2);
+ };
 }
 
 /**

js/console_test.ts

@@ -116,7 +116,7 @@ test(function consoleTestStringifyCircular() {
  assertEqual(
  stringify(console),
  // tslint:disable-next-line:max-line-length
- "Console { printFunc: [Function], log: [Function], debug: [Function], info: [Function], dir: [Function], warn: [Function], error: [Function], assert: [Function], count: [Function], countReset: [Function], time: [Function], timeLog: [Function], timeEnd: [Function] }"
+ "Console { printFunc: [Function], log: [Function], debug: [Function], info: [Function], dir: [Function], warn: [Function], error: [Function], assert: [Function], count: [Function], countReset: [Function], time: [Function], timeLog: [Function], timeEnd: [Function], group: [Function], groupEnd: [Function] }"
  );
  // test inspect is working the same
  assertEqual(inspect(nestedObj), nestedObjExpected);
@@ -145,6 +145,39 @@ test(function consoleTestStringifyWithDepth() {
  );
 });
 
+test(function consoleStringifyWithGroup() {
+ const outstrs = [
+ "This is the outer level",
+ "Level 2",
+ "Level 3",
+ "More of level 3",
+ "Back to level 2",
+ "Back to the outer level",
+ "Still at the outer level"
+ ];
+ const expectedOut = `${outstrs[0]} ${outstrs[1]} ${outstrs[2]} ${
+ outstrs[3]
+ }${outstrs[4]}${outstrs[5]}`;
+
+ const expectedErr = ` More of level 3`;
+ let out = "";
+ let outErr = "";
+ out += stringifyArgs([outstrs[0]]);
+ console.group();
+ out += stringifyArgs([outstrs[1]]);
+ console.group();
+ out += stringifyArgs([outstrs[2]]);
+ outErr += stringifyArgs([outstrs[3]]);
+ console.groupEnd();
+ out += stringifyArgs([outstrs[3]]);
+ console.groupEnd();
+ out += stringifyArgs([outstrs[4]]);
+ console.groupEnd();
+ out += stringifyArgs([outstrs[5]]);
+ assertEqual(out, expectedOut);
+ assertEqual(outErr, expectedErr);
+});
+
 test(function consoleTestCallToStringOnLabel() {
  const methods = ["count", "countReset", "time", "timeLog", "timeEnd"];
 
@@ -189,6 +222,8 @@ test(function consoleDetachedLog() {
  const consoleTime = console.time;
  const consoleTimeLog = console.timeLog;
  const consoleTimeEnd = console.timeEnd;
+ const consoleGroup = console.group;
+ const consoleGroupEnd = console.groupEnd;
  log("Hello world");
  dir("Hello world");
  debug("Hello world");
@@ -201,4 +236,6 @@ test(function consoleDetachedLog() {
  consoleTime("Hello world");
  consoleTimeLog("Hello world");
  consoleTimeEnd("Hello world");
+ consoleGroup("Hello world");
+ consoleGroupEnd();
 });