"use strict";
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var isCallable = require("../object/is-callable")
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, value = require("../object/valid-value")
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, call = Function.prototype.call;
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module.exports = function (fmap) {
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fmap = Object(value(fmap));
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return function (pattern) {
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var context = this;
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value(context);
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pattern = String(pattern);
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return pattern.replace(
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/%([a-zA-Z]+)|\\([\u0000-\uffff])/g,
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function (match, token, escapeChar) {
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var t, result;
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if (escapeChar) return escapeChar;
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t = token;
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while (t && !(result = fmap[t])) t = t.slice(0, -1);
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if (!result) return match;
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if (isCallable(result)) result = call.call(result, context);
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return result + token.slice(t.length);
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}
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);
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};
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};
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