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GeezerVison is showing github.com — bootstrap: print `--help` message using `console.log` · nodejs/node@a52de8c

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lib/internal/main
- print_help.js
test/parallel
- test-cli-node-print-help.js

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`‎lib/internal/main/print_help.js‎`

Copy file name to clipboardExpand all lines: lib/internal/main/print_help.js

+7-5Lines changed: 7 additions & 5 deletions

Original file line number	Diff line number	Diff line change
`@@ -202,6 +202,7 @@ function format(`
`202`	`202`
`203`	`203`	`function print(stream) {`
`204`	`204`	`const { options, aliases } = getCLIOptionsInfo();`
	`205`	`+ const console = require('internal/console/global');`
`205`	`206`
`206`	`207`	`// Use 75 % of the available width, and at least 70 characters.`
`207`	`208`	`const width = MathMax(70, (stream.columns \|\| 0) * 0.75);`
`@@ -212,21 +213,22 @@ function print(stream) {`
`212`	`213`	`'(default if no file name is provided, ' +`
`213`	`214`	`'interactive mode if a tty)' });`
`214`	`215`	`options.set('--', { helpText: 'indicate the end of node options' });`
`215`		`- stream.write(`
	`216`	`+ let helpText = (`
`216`	`217`	`'Usage: node [options] [ script.js ] [arguments]\n' +`
`217`	`218`	`' node inspect [options] [ script.js \| host:port ] [arguments]\n\n' +`
`218`	`219`	`'Options:\n');`
`219`		`- stream.write(indent(format({`
	`220`	`+ helpText += (indent(format({`
`220`	`221`	`options, aliases, firstColumn, secondColumn,`
`221`	`222`	`}), 2));`
`222`	`223`
`223`		`- stream.write('\nEnvironment variables:\n');`
	`224`	`+ helpText += ('\nEnvironment variables:\n');`
`224`	`225`
`225`		`- stream.write(format({`
	`226`	`+ helpText += (format({`
`226`	`227`	`options: envVars, firstColumn, secondColumn,`
`227`	`228`	`}));`
`228`	`229`
`229`		`- stream.write('\nDocumentation can be found at https://nodejs.org/\n');`
	`230`	`+ helpText += ('\nDocumentation can be found at https://nodejs.org/');`
	`231`	`+ console.log(helpText);`
`230`	`232`	`}`
`231`	`233`
`232`	`234`	`prepareMainThreadExecution();`

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`‎test/parallel/test-cli-node-print-help.js‎`

Copy file name to clipboardExpand all lines: test/parallel/test-cli-node-print-help.js

+12-1Lines changed: 12 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -7,7 +7,8 @@ const common = require('../common');`
`7`	`7`	`// returns the proper set of cli options when invoked`
`8`	`8`
`9`	`9`	`const assert = require('assert');`
`10`		`-const { exec } = require('child_process');`
	`10`	`+const { exec, spawn } = require('child_process');`
	`11`	`+const { once } = require('events');`
`11`	`12`	`let stdOut;`
`12`	`13`
`13`	`14`
`@@ -53,3 +54,13 @@ function testForSubstring(options) {`
`53`	`54`	`}`
`54`	`55`
`55`	`56`	`startPrintHelpTest();`
	`57`	`+`
	`58`	+// Test closed stdout for `node --help`. Like `node --help \| head -n5`.
	`59`	`+(async () => {`
	`60`	`+ const cp = spawn(process.execPath, ['--help'], {`
	`61`	`+ stdio: ['inherit', 'pipe', 'inherit'],`
	`62`	`+ });`
	`63`	`+ cp.stdout.destroy();`
	`64`	`+ const [exitCode] = await once(cp, 'exit');`
	`65`	`+ assert.strictEqual(exitCode, 0);`
	`66`	`+})().then(common.mustCall());`

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