gnezim
62 lines
1.7 KiB
JavaScript
62 lines
1.7 KiB
JavaScript
"use strict";
|
|
|
|
require("core-js/modules/es.array.concat");
|
|
|
|
require("core-js/modules/es.regexp.exec");
|
|
|
|
require("core-js/modules/es.string.match");
|
|
|
|
var SemVer = require('../classes/semver');
|
|
|
|
var parse = require('./parse');
|
|
|
|
var _require = require('../internal/re'),
|
|
re = _require.re,
|
|
t = _require.t;
|
|
|
|
var coerce = function coerce(version, options) {
|
|
if (version instanceof SemVer) {
|
|
return version;
|
|
}
|
|
|
|
if (typeof version === 'number') {
|
|
version = String(version);
|
|
}
|
|
|
|
if (typeof version !== 'string') {
|
|
return null;
|
|
}
|
|
|
|
options = options || {};
|
|
var match = null;
|
|
|
|
if (!options.rtl) {
|
|
match = version.match(re[t.COERCE]);
|
|
} else {
|
|
// Find the right-most coercible string that does not share
|
|
// a terminus with a more left-ward coercible string.
|
|
// Eg, '1.2.3.4' wants to coerce '2.3.4', not '3.4' or '4'
|
|
//
|
|
// Walk through the string checking with a /g regexp
|
|
// Manually set the index so as to pick up overlapping matches.
|
|
// Stop when we get a match that ends at the string end, since no
|
|
// coercible string can be more right-ward without the same terminus.
|
|
var next;
|
|
|
|
while ((next = re[t.COERCERTL].exec(version)) && (!match || match.index + match[0].length !== version.length)) {
|
|
if (!match || next.index + next[0].length !== match.index + match[0].length) {
|
|
match = next;
|
|
}
|
|
|
|
re[t.COERCERTL].lastIndex = next.index + next[1].length + next[2].length;
|
|
} // leave it in a clean state
|
|
|
|
|
|
re[t.COERCERTL].lastIndex = -1;
|
|
}
|
|
|
|
if (match === null) return null;
|
|
return parse("".concat(match[2], ".").concat(match[3] || '0', ".").concat(match[4] || '0'), options);
|
|
};
|
|
|
|
module.exports = coerce; |