mirror of
https://github.com/amark/gun.git
synced 2026-02-27 13:43:22 +00:00
638c2c3c23
later with @bmatusiak check sea.then for '../gun.js' vs '../' vs ... note: src/index -> core.js TODO: something about WebRTC candidates hitting ack decrement limits?
42 lines
784 B
JavaScript
42 lines
784 B
JavaScript
;(function(){
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var Gun = require('./root');
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Gun.chain.back = function(n, opt){ var tmp;
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n = n || 1;
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if(-1 === n || Infinity === n){
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return this._.root.$;
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} else
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if(1 === n){
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return (this._.back || this._).$;
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}
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var gun = this, at = gun._;
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if(typeof n === 'string'){
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n = n.split('.');
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}
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if(n instanceof Array){
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var i = 0, l = n.length, tmp = at;
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for(i; i < l; i++){
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tmp = (tmp||empty)[n[i]];
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}
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if(u !== tmp){
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return opt? gun : tmp;
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} else
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if((tmp = at.back)){
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return tmp.$.back(n, opt);
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}
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return;
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}
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if('function' == typeof n){
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var yes, tmp = {back: at};
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while((tmp = tmp.back)
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&& u === (yes = n(tmp, opt))){}
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return yes;
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}
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if('number' == typeof n){
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return (at.back || at).$.back(n - 1);
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}
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return this;
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}
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var empty = {}, u;
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}()); |