51 lines
1.2 KiB
JavaScript
51 lines
1.2 KiB
JavaScript
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"use strict";
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function dedent(strings) {
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for (var _len = arguments.length, values = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
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values[_key - 1] = arguments[_key];
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}
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var raw = undefined;
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if (typeof strings === "string") {
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// dedent can be used as a plain function
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raw = [strings];
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} else {
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raw = strings.raw;
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}
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// first, perform interpolation
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var result = "";
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for (var i = 0; i < raw.length; i++) {
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// join lines when there is a suppressed newline
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result += raw[i].replace(/\\\n[ \t]*/g, "");
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if (i < values.length) {
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result += values[i];
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}
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}
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// dedent eats leading and trailing whitespace too
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result = result.trim();
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// now strip indentation
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var lines = result.split("\n");
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var mindent = null;
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lines.forEach(function (l) {
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var m = l.match(/^ +/);
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if (m) {
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var indent = m[0].length;
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if (!mindent) {
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// this is the first indented line
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mindent = indent;
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} else {
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mindent = Math.min(mindent, indent);
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}
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}
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});
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if (mindent === null) {
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return result;
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}return lines.map(function (l) {
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return l[0] === " " ? l.slice(mindent) : l;
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}).join("\n");
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}
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module.exports = dedent;
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