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dannvix/es6-tagged-template.js

Created July 13, 2015 14:22
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  1. dannvix created this gist Jul 13, 2015.
    19 changes: 19 additions & 0 deletions es6-tagged-template.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,19 @@
    // Python-like template string in ECMAScript 6 "tagged template"
    // inspired from http://stackoverflow.com/a/22619256
    function formatter(literals, ...substitutions) {
    return {
    format: function() {
    let out = [], i = 0, k = 0;
    for (i,k; i < literals.length; i++) {
    out[k++] = literals[i];
    out[k++] = Number.isInteger(substitutions[i]) ?
    arguments[substitutions[i]] :
    arguments[0][substitutions[i]];
    }
    out[k] = literals[i];
    return out.join("");
    },
    };
    };
    console.log(formatter`Hello, ${0}. This is a ${1}`.format("world", "test"));
    console.log(formatter`Hello, ${"foo"}. This is a ${"bar"}`.format({foo: "world", bar: "test"}));