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@sindresorhus
sindresorhus / esm-package.md
Last active May 14, 2025 06:52
Pure ESM package

Pure ESM package

The package that linked you here is now pure ESM. It cannot be require()'d from CommonJS.

This means you have the following choices:

  1. Use ESM yourself. (preferred)
    Use import foo from 'foo' instead of const foo = require('foo') to import the package. You also need to put "type": "module" in your package.json and more. Follow the below guide.
  2. If the package is used in an async context, you could use await import(…) from CommonJS instead of require(…).
  3. Stay on the existing version of the package until you can move to ESM.
@blemoine
blemoine / gist:e6045ed93b3d90a52891
Last active May 14, 2024 15:21
Convert Lambert 93 to GPS Coordinates Latitude / Longitude (wgs84)
Math.tanh = Math.tanh || function(x) {
if(x === Infinity) {
return 1;
} else if(x === -Infinity) {
return -1;
} else {
return (Math.exp(x) - Math.exp(-x)) / (Math.exp(x) + Math.exp(-x));
}
};
@will83
will83 / gist:5920606
Last active May 13, 2025 07:50
Fonction PHP permettant la conversion de Lambert93 à WGS84 (selon le fichier fourni par l'IGN).
<?php
function lambert93ToWgs84($x, $y){
$x = number_format($x, 10, '.', '');
$y = number_format($y, 10, '.', '');
$b6 = 6378137.0000;
$b7 = 298.257222101;
$b8 = 1/$b7;
$b9 = 2*$b8-$b8*$b8;
$b10 = sqrt($b9);
$b13 = 3.000000000;