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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)
};