nunjucks-precompile with jinja compat (modified from `v3.0.1`), see https://stackoverflow.com/a/45440732/949890

nunjucks-precompile

#!/usr/bin/env node
var path = require('path');
var precompile = require('nunjucks/src/precompile').precompile;
var Environment = require('nunjucks/src/environment').Environment;
var lib = require('nunjucks/src/lib');
var nunjucks = require('nunjucks');
nunjucks.installJinjaCompat();

var yargs = require('yargs')

    .usage('$0 [-f|--force] [-a|--filters <filters>] [-n|--name <name>] [-i|--include <regex>] [-x|--exclude <regex>] [-w|--wrapper <wrapper>] <path>')
    .wrap(80)

    .describe('help', 'Display this help message')
        .boolean('help')
        .alias('h', 'help')
        .alias('?', 'help')

    .describe('force', 'Force compilation to continue on error')
        .boolean('force')
        .alias('f', 'force')

    .describe('filters', 'Give the compiler a comma-delimited list of asynchronous filters, required for correctly generating code')
        .string('filters')
        .alias('a', 'filters')

    .describe('name', 'Specify the template name when compiling a single file')
        .string('name')
        .alias('n', 'n')

    .describe('include', 'Include a file or folder which match the regex but would otherwise be excluded. You can use this flag multiple times')
        .string('include' )
        .default('include', ['\\.html$', '\\.jinja$'])
        .alias('i', 'include')

    .describe('exclude', 'Exclude a file or folder which match the regex but would otherwise be included. You can use this flag multiple times')
        .string('exclude' )
        .default('exclude', [])
        .alias('x', 'exclude')

    .describe('wrapper', 'Load a external plugin to change the output format of the precompiled templates (for example, "-w custom" will load a module named "nunjucks-custom")')
        .string('wrapper')
        .alias('w', 'wrapper')

    .demand(1);

var argv = yargs.argv;

if (argv.help) {
    yargs.showHelp();
    process.exit(1);
}

var env = new Environment([]);

lib.each([].concat(argv.filters).join(',').split(','), function(name) {
    env.addFilter(name.trim(), function() {}, true);
});

if(argv.wrapper) {
    argv.wrapper = require('nunjucks-' + argv.wrapper).wrapper;
}

console.log(precompile(argv._[0], {
    env : env,
    force : argv.force,
    name : argv.name,
    wrapper: argv.wrapper,

    include : [].concat(argv.include),
    exclude : [].concat(argv.exclude)
}));