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- 'use strict';
- const supportsColor = require('supports-color');
- const hasFlag = require('has-flag');
-
- function parseVersion(versionString) {
- if (/^\d{3,4}$/.test(versionString)) {
- // Env var doesn't always use dots. example: 4601 => 46.1.0
- const m = /(\d{1,2})(\d{2})/.exec(versionString);
- return {
- major: 0,
- minor: parseInt(m[1], 10),
- patch: parseInt(m[2], 10)
- };
- }
-
- const versions = (versionString || '').split('.').map(n => parseInt(n, 10));
- return {
- major: versions[0],
- minor: versions[1],
- patch: versions[2]
- };
- }
-
- function supportsHyperlink(stream) {
- const {env} = process;
-
- if ('FORCE_HYPERLINK' in env) {
- return !(env.FORCE_HYPERLINK.length > 0 && parseInt(env.FORCE_HYPERLINK, 10) === 0);
- }
-
- if (hasFlag('no-hyperlink') || hasFlag('no-hyperlinks') || hasFlag('hyperlink=false') || hasFlag('hyperlink=never')) {
- return false;
- }
-
- if (hasFlag('hyperlink=true') || hasFlag('hyperlink=always')) {
- return true;
- }
-
- // If they specify no colors, they probably don't want hyperlinks.
- if (!supportsColor.supportsColor(stream)) {
- return false;
- }
-
- if (stream && !stream.isTTY) {
- return false;
- }
-
- if (process.platform === 'win32') {
- return false;
- }
-
- if ('NETLIFY' in env) {
- return true;
- }
-
- if ('CI' in env) {
- return false;
- }
-
- if ('TEAMCITY_VERSION' in env) {
- return false;
- }
-
- if ('TERM_PROGRAM' in env) {
- const version = parseVersion(env.TERM_PROGRAM_VERSION);
-
- switch (env.TERM_PROGRAM) {
- case 'iTerm.app':
- if (version.major === 3) {
- return version.minor >= 1;
- }
-
- return version.major > 3;
- // No default
- }
- }
-
- if ('VTE_VERSION' in env) {
- // 0.50.0 was supposed to support hyperlinks, but throws a segfault
- if (env.VTE_VERSION === '0.50.0') {
- return false;
- }
-
- const version = parseVersion(env.VTE_VERSION);
- return version.major > 0 || version.minor >= 50;
- }
-
- return false;
- }
-
- module.exports = {
- supportsHyperlink,
- stdout: supportsHyperlink(process.stdout),
- stderr: supportsHyperlink(process.stderr)
- };
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