postinstall.js

// Copyright (C) 2015 IBM Corporation and Others. All Rights Reserved.

var fs = require('fs');
var path = require('path');
var fullIcu = require('./full-icu');


var myname = process.env.npm_package_name || 'full-icu';

function exit(reason) {
	console.log(reason);
	process.exit(0);
}

if (fullIcu.oldNode) {
	exit('Not sure how to handle node < 0.12. Exitting.');
} else if (fullIcu.noi18n) {
	exit('Note: Your node was not compiled with i18n support. Nothing to do, Exitting.');
} else if (fullIcu.icu_system) {
	exit('Note: Your node was compiled to link against an ' +
	'externally-provided ICU, so the locale data is not customizable ' +
	'through this script. Exitting.');
} else if (!fullIcu.icu_small) {
	// maybe already full icu, or some as-yet-unforseen case.
	exit('Note: Your node was not compiled with the ‘small-icu’ case,' +
	' so the ICU data is not customizable through this script. Exitting.');
} else if( fullIcu.icumaj < 54 ) {
	// This is kind of a sanity check that the ICU version is correct.
	// ICU 54 was what Node v0.12 started with.
	throw Error('Don’t know how to work with ICU version ' + fullIcu.icumaj + ', sorry.');
}

var cwd = fs.realpathSync('.');

var isglobal = process.env.npm_config_global === 'true';

var relpath = isglobal ? cwd : path.join('node_modules',myname);

function advice() {
	if( fullIcu.nodeDetectIcu ) {
		console.log('Note: If you manually copy ' + path.join(relpath,fullIcu.icudat) + ' to the directory ' +
			path.normalize(path.join(relpath,'..','.node-icu'))
			 + ' node will automatically detect this data.');
		if(fullIcu.nodeDetectIcu === 'maybe') {
			console.log(' - at least when https://github.com/nodejs/node/issues/3460 lands');
		}
	}

	if(fullIcu.nodeDetectIcu !== true) {
		console.log('Node will use this ICU datafile if the environment variable NODE_ICU_DATA is set to “'+relpath+'”');
		console.log('or with node --icu-data-dir='+relpath+' YOURAPP.js' );

		var asJson = {scripts: { start: "node --icu-data-dir="+relpath + " YOURAPP.js" }};
		console.log(" For package.json:");
		console.log(JSON.stringify(asJson));
	}
	console.log("");
	console.log("By the way, if you have full data, running this in node:");
	// 9E8 is 10 days into January, so TimeZone independent
	console.log("> new Intl.DateTimeFormat('es',{month:'long'}).format(new Date(9E8));");
	console.log("... will show “enero”. If it shows “January” you don't have full data.");
}

// install by using spawn
var npmInstall = require('./install-spawn');

if(fs.existsSync(fullIcu.icudat)) {
	console.log('√ ' + fullIcu.icudat + ' Already there (for Node ' + fullIcu.nodever + ' and small-icu ' + fullIcu.icuver + ')');
	advice();
} else {
	console.log('npm install ' + fullIcu.icupkg + ' (Node ' + fullIcu.nodever + ' and small-icu ' + fullIcu.icuver + ') -> ' + fullIcu.icudat);
	npmInstall(fullIcu, advice);
}
console.log('News: Please see https://github.com/icu-project/full-icu-npm/issues/6');