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- 'use strict';
- var isCallable = require('../object/is-callable')
- , value = require('../object/valid-value')
- , call = Function.prototype.call;
- module.exports = function (fmap) {
- fmap = Object(value(fmap));
- return function (pattern) {
- var context = value(this);
- pattern = String(pattern);
- return pattern.replace(/%([a-zA-Z]+)|\\([\u0000-\uffff])/g,
- function (match, token, escape) {
- var t, r;
- if (escape) return escape;
- t = token;
- while (t && !(r = fmap[t])) t = t.slice(0, -1);
- if (!r) return match;
- if (isCallable(r)) r = call.call(r, context);
- return r + token.slice(t.length);
- });
- };
- };
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