64 lines
1.4 KiB
JavaScript
64 lines
1.4 KiB
JavaScript
"use strict";
|
|
|
|
function dedent(strings) {
|
|
|
|
var raw = undefined;
|
|
if (typeof strings === "string") {
|
|
// dedent can be used as a plain function
|
|
raw = [strings];
|
|
} else {
|
|
raw = strings.raw;
|
|
}
|
|
|
|
// first, perform interpolation
|
|
var result = "";
|
|
|
|
for (var _len = arguments.length, values = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
|
|
values[_key - 1] = arguments[_key];
|
|
}
|
|
|
|
for (var i = 0; i < raw.length; i++) {
|
|
result += raw[i].
|
|
// join lines when there is a suppressed newline
|
|
replace(/\\\n[ \t]*/g, "").
|
|
|
|
// handle escaped backticks
|
|
replace(/\\`/g, "`");
|
|
|
|
if (i < values.length) {
|
|
result += values[i];
|
|
}
|
|
}
|
|
|
|
// dedent eats leading and trailing whitespace too
|
|
result = result.trim();
|
|
|
|
// now strip indentation
|
|
var lines = result.split("\n");
|
|
var mindent = null;
|
|
lines.forEach(function (l) {
|
|
var m = l.match(/^ +/);
|
|
if (m) {
|
|
var indent = m[0].length;
|
|
if (!mindent) {
|
|
// this is the first indented line
|
|
mindent = indent;
|
|
} else {
|
|
mindent = Math.min(mindent, indent);
|
|
}
|
|
}
|
|
});
|
|
|
|
if (mindent !== null) {
|
|
result = lines.map(function (l) {
|
|
return l[0] === " " ? l.slice(mindent) : l;
|
|
}).join("\n");
|
|
}
|
|
|
|
// handle escaped newlines at the end to ensure they don't get stripped too
|
|
return result.replace(/\\n/g, "\n");
|
|
}
|
|
|
|
if (typeof module !== "undefined") {
|
|
module.exports = dedent;
|
|
} |