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authorruki <waruqi@gmail.com>2018-11-08 00:38:48 +0800
committerruki <waruqi@gmail.com>2018-11-07 21:53:09 +0800
commit26105034da4fcce7ac883c899d781f016559310d (patch)
treec459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/resolve/lib/core.js
parent2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff)
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Diffstat (limited to 'node_modules/resolve/lib/core.js')
-rw-r--r--node_modules/resolve/lib/core.js53
1 files changed, 53 insertions, 0 deletions
diff --git a/node_modules/resolve/lib/core.js b/node_modules/resolve/lib/core.js
new file mode 100644
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--- /dev/null
+++ b/node_modules/resolve/lib/core.js
@@ -0,0 +1,53 @@
+var current = (process.versions && process.versions.node && process.versions.node.split('.')) || [];
+
+function specifierIncluded(specifier) {
+ var parts = specifier.split(' ');
+ var op = parts.length > 1 ? parts[0] : '=';
+ var versionParts = (parts.length > 1 ? parts[1] : parts[0]).split('.');
+
+ for (var i = 0; i < 3; ++i) {
+ var cur = Number(current[i] || 0);
+ var ver = Number(versionParts[i] || 0);
+ if (cur === ver) {
+ continue; // eslint-disable-line no-restricted-syntax, no-continue
+ }
+ if (op === '<') {
+ return cur < ver;
+ } else if (op === '>=') {
+ return cur >= ver;
+ } else {
+ return false;
+ }
+ }
+ return op === '>=';
+}
+
+function matchesRange(range) {
+ var specifiers = range.split(/ ?&& ?/);
+ if (specifiers.length === 0) { return false; }
+ for (var i = 0; i < specifiers.length; ++i) {
+ if (!specifierIncluded(specifiers[i])) { return false; }
+ }
+ return true;
+}
+
+function versionIncluded(specifierValue) {
+ if (typeof specifierValue === 'boolean') { return specifierValue; }
+ if (specifierValue && typeof specifierValue === 'object') {
+ for (var i = 0; i < specifierValue.length; ++i) {
+ if (matchesRange(specifierValue[i])) { return true; }
+ }
+ return false;
+ }
+ return matchesRange(specifierValue);
+}
+
+var data = require('./core.json');
+
+var core = {};
+for (var mod in data) { // eslint-disable-line no-restricted-syntax
+ if (Object.prototype.hasOwnProperty.call(data, mod)) {
+ core[mod] = versionIncluded(data[mod]);
+ }
+}
+module.exports = core;