Webpack (single bundle for now)

9 files changed, 277 insertions, 299 deletions

diff --git a/src/defs.js b/src/defs.js
index 3b5a923..be27032 100644
--- a/src/defs.js
+++ b/src/defs.js
@@ -293,7 +293,7 @@ const LUA_VDIR = LUA_VERSION_MAJOR + "." + LUA_VERSION_MINOR;
 module.exports.LUA_VDIR = LUA_VDIR;
 
 let os = false;
-if (typeof require === "function" && (os = require('os')) && typeof os.platform === "function" && os.platform() === 'win32') {
+if (!WEB && os.platform() === 'win32') {
     const LUA_DIRSEP = "\\";
     module.exports.LUA_DIRSEP = LUA_DIRSEP;
 
diff --git a/src/fengari.js b/src/fengari.js
new file mode 100644
index 0000000..abbf2a4
--- /dev/null
+++ b/src/fengari.js
@@ -0,0 +1,7 @@
+"use strict";
+
+const lua      = require('./lua.js');
+const lauxlib  = require('./lauxlib.js');
+
+module.exports.lua = lua;
+module.exports.lauxlib = lauxlib;
diff --git a/src/lauxlib.js b/src/lauxlib.js
index c0f1ecf..4f55e13 100644
--- a/src/lauxlib.js
+++ b/src/lauxlib.js
@@ -617,149 +617,144 @@ const luaL_newlib = function(L, l) {
 };
 
 // Only with Node
-if (typeof require === "function") {
-    let fs = false;
-    try {
-        fs = require('fs');
-    } catch (e) {}
-
-    if (fs) {
-        class LoadF {
-            constructor() {
-                this.n = NaN;  /* number of pre-read characters */
-                this.f = null;  /* file being read */
-                this.buff = new Buffer(1024);  /* area for reading file */
-                this.pos = 0;  /* current position in file */
-                this.binary = false;
-            }
+if (!WEB) {
+    const fs = require('fs');
+
+    class LoadF {
+        constructor() {
+            this.n = NaN;  /* number of pre-read characters */
+            this.f = null;  /* file being read */
+            this.buff = new Buffer(1024);  /* area for reading file */
+            this.pos = 0;  /* current position in file */
+            this.binary = false;
         }
+    }
 
-        const toDataView = function(buffer) {
-            let ab = new ArrayBuffer(buffer.length);
-            let au = new Uint8Array(ab);
-            for (let i = 0; i < buffer.length; i++)
-                au[i] = buffer[i];
-            return new DataView(ab);
-        };
-
-        const getF = function(L, ud) {
-            let lf = ud;
-            let bytes = 0;
-            if (lf.n > 0) {  /* are there pre-read characters to be read? */
-                lf.n = 0;  /* no more pre-read characters */
-            } else {  /* read a block from file */
-                lf.buff.fill(0);
-                bytes = fs.readSync(lf.f, lf.buff, 0, lf.buff.length, lf.pos); /* read block */
-                lf.pos += bytes;
-            }
-            if (bytes > 0)
-                return lf.binary ? toDataView(lf.buff) : lf.buff.slice(0, bytes);
-            else return null;
-        };
-
-        const errfile = function(L, what, fnameindex, error) {
-            let serr = error.message;
-            let filename = lua.lua_tostring(L, fnameindex).slice(1);
-            lua.lua_pushstring(L, lua.to_luastring(`cannot ${what} ${lua.to_jsstring(filename)}: ${serr}`));
-            lua.lua_remove(L, fnameindex);
-            return lua.LUA_ERRFILE;
-        };
-
-        const getc = function(lf) {
-            let b = new Buffer(1);
-            let bytes = fs.readSync(lf.f, b, 0, 1, lf.pos);
+    const toDataView = function(buffer) {
+        let ab = new ArrayBuffer(buffer.length);
+        let au = new Uint8Array(ab);
+        for (let i = 0; i < buffer.length; i++)
+            au[i] = buffer[i];
+        return new DataView(ab);
+    };
+
+    const getF = function(L, ud) {
+        let lf = ud;
+        let bytes = 0;
+        if (lf.n > 0) {  /* are there pre-read characters to be read? */
+            lf.n = 0;  /* no more pre-read characters */
+        } else {  /* read a block from file */
+            lf.buff.fill(0);
+            bytes = fs.readSync(lf.f, lf.buff, 0, lf.buff.length, lf.pos); /* read block */
             lf.pos += bytes;
-            return bytes > 0 ? b.readUInt8() : null;
-        };
-
-        const skipBOM = function(lf) {
-            let p = [0XEF, 0XBB, 0XBF];  /* UTF-8 BOM mark */
-            lf.n = 0;
-            let c;
-            do {
+        }
+        if (bytes > 0)
+            return lf.binary ? toDataView(lf.buff) : lf.buff.slice(0, bytes);
+        else return null;
+    };
+
+    const errfile = function(L, what, fnameindex, error) {
+        let serr = error.message;
+        let filename = lua.lua_tostring(L, fnameindex).slice(1);
+        lua.lua_pushstring(L, lua.to_luastring(`cannot ${what} ${lua.to_jsstring(filename)}: ${serr}`));
+        lua.lua_remove(L, fnameindex);
+        return lua.LUA_ERRFILE;
+    };
+
+    const getc = function(lf) {
+        let b = new Buffer(1);
+        let bytes = fs.readSync(lf.f, b, 0, 1, lf.pos);
+        lf.pos += bytes;
+        return bytes > 0 ? b.readUInt8() : null;
+    };
+
+    const skipBOM = function(lf) {
+        let p = [0XEF, 0XBB, 0XBF];  /* UTF-8 BOM mark */
+        lf.n = 0;
+        let c;
+        do {
+            c = getc(lf);
+            if (c === null || c !== p[0]) return c;
+            p = p.slice(1);
+            lf.buff[lf.n++] = c;  /* to be read by the parser */
+        } while (p.length > 0);
+        lf.n = 0;  /* prefix matched; discard it */
+        return getc(lf);  /* return next character */
+    };
+
+    /*
+    ** reads the first character of file 'f' and skips an optional BOM mark
+    ** in its beginning plus its first line if it starts with '#'. Returns
+    ** true if it skipped the first line.  In any case, '*cp' has the
+    ** first "valid" character of the file (after the optional BOM and
+    ** a first-line comment).
+    */
+    const skipcomment = function(lf) {
+        let c = skipBOM(lf);
+        if (c === '#'.charCodeAt(0)) {  /* first line is a comment (Unix exec. file)? */
+            do {  /* skip first line */
                 c = getc(lf);
-                if (c === null || c !== p[0]) return c;
-                p = p.slice(1);
-                lf.buff[lf.n++] = c;  /* to be read by the parser */
-            } while (p.length > 0);
-            lf.n = 0;  /* prefix matched; discard it */
-            return getc(lf);  /* return next character */
-        };
-
-        /*
-        ** reads the first character of file 'f' and skips an optional BOM mark
-        ** in its beginning plus its first line if it starts with '#'. Returns
-        ** true if it skipped the first line.  In any case, '*cp' has the
-        ** first "valid" character of the file (after the optional BOM and
-        ** a first-line comment).
-        */
-        const skipcomment = function(lf) {
-            let c = skipBOM(lf);
-            if (c === '#'.charCodeAt(0)) {  /* first line is a comment (Unix exec. file)? */
-                do {  /* skip first line */
-                    c = getc(lf);
-                } while (c && c !== '\n'.charCodeAt(0));
-
-                return {
-                    skipped: true,
-                    c: getc(lf)  /* skip end-of-line, if present */
-                };
-            } else {
-                lf.pos--;
-                return {
-                    skipped: false,
-                    c: c
-                };
-            }
-        };
-
-        const luaL_loadfilex = function(L, filename, mode) {
-            let lf = new LoadF();
-            let fnameindex = lua.lua_gettop(L) + 1;  /* index of filename on the stack */
-            if (filename === null) {
-                lua.lua_pushliteral(L, "=stdin");
-                lf.f = process.stdin.fd;
-            } else {
-                let jsfilename = lua.to_jsstring(filename);
-                lua.lua_pushliteral(L, `@${jsfilename}`);
-                try {
-                    lf.f = fs.openSync(jsfilename, "r");
-                } catch (e) {
-                    return errfile(L, "open", fnameindex, e);
-                }
-            }
+            } while (c && c !== '\n'.charCodeAt(0));
 
+            return {
+                skipped: true,
+                c: getc(lf)  /* skip end-of-line, if present */
+            };
+        } else {
+            lf.pos--;
+            return {
+                skipped: false,
+                c: c
+            };
+        }
+    };
+
+    const luaL_loadfilex = function(L, filename, mode) {
+        let lf = new LoadF();
+        let fnameindex = lua.lua_gettop(L) + 1;  /* index of filename on the stack */
+        if (filename === null) {
+            lua.lua_pushliteral(L, "=stdin");
+            lf.f = process.stdin.fd;
+        } else {
+            let jsfilename = lua.to_jsstring(filename);
+            lua.lua_pushliteral(L, `@${jsfilename}`);
             try {
-                let com;
-                if ((com = skipcomment(lf)).skipped)  /* read initial portion */
-                    lf.buff[lf.n++] = '\n'.charCodeAt(0);  /* add line to correct line numbers */
+                lf.f = fs.openSync(jsfilename, "r");
+            } catch (e) {
+                return errfile(L, "open", fnameindex, e);
+            }
+        }
 
-                if (com.c === lua.LUA_SIGNATURE.charCodeAt(0) && filename) {  /* binary file? */
-                    lf.binary = true;
-                }
+        try {
+            let com;
+            if ((com = skipcomment(lf)).skipped)  /* read initial portion */
+                lf.buff[lf.n++] = '\n'.charCodeAt(0);  /* add line to correct line numbers */
 
-                let status = lua.lua_load(L, getF, lf, lua.lua_tostring(L, -1), mode);
-                if (filename) fs.closeSync(lf.f);  /* close file (even in case of errors) */
-                lua.lua_remove(L, fnameindex);
-                return status;
-            } catch (err) {
-                lua.lua_settop(L, fnameindex);  /* ignore results from 'lua_load' */
-                return errfile(L, "read", fnameindex, err);
+            if (com.c === lua.LUA_SIGNATURE.charCodeAt(0) && filename) {  /* binary file? */
+                lf.binary = true;
             }
-        };
 
-        const luaL_loadfile = function(L, filename) {
-            return luaL_loadfilex(L, filename, null);
-        };
+            let status = lua.lua_load(L, getF, lf, lua.lua_tostring(L, -1), mode);
+            if (filename) fs.closeSync(lf.f);  /* close file (even in case of errors) */
+            lua.lua_remove(L, fnameindex);
+            return status;
+        } catch (err) {
+            lua.lua_settop(L, fnameindex);  /* ignore results from 'lua_load' */
+            return errfile(L, "read", fnameindex, err);
+        }
+    };
 
-        const luaL_dofile = function(L, filename) {
-            return (luaL_loadfile(L, filename) || lua.lua_pcall(L, 0, lua.LUA_MULTRET, 0));
-        };
+    const luaL_loadfile = function(L, filename) {
+        return luaL_loadfilex(L, filename, null);
+    };
 
-        module.exports.luaL_dofile    = luaL_dofile;
-        module.exports.luaL_loadfilex = luaL_loadfilex;
-        module.exports.luaL_loadfile  = luaL_loadfile;
-    }
+    const luaL_dofile = function(L, filename) {
+        return (luaL_loadfile(L, filename) || lua.lua_pcall(L, 0, lua.LUA_MULTRET, 0));
+    };
+
+    module.exports.luaL_dofile    = luaL_dofile;
+    module.exports.luaL_loadfilex = luaL_loadfilex;
+    module.exports.luaL_loadfile  = luaL_loadfile;
 }
 
 const lua_writestringerror = function(s) {
diff --git a/src/lbaselib.js b/src/lbaselib.js
index d1d930a..8f0827e 100644
--- a/src/lbaselib.js
+++ b/src/lbaselib.js
@@ -331,38 +331,33 @@ const base_funcs = {
 };
 
 // Only with Node
-if (typeof require === "function") {
-
-    let fs = false;
-    try {
-        fs = require('fs');
-    } catch (e) {}
-
-    if (fs) {
-        const luaB_loadfile = function(L) {
-            let fname = lauxlib.luaL_optstring(L, 1, null);
-            let mode = lauxlib.luaL_optstring(L, 2, null);
-            let env = !lua.lua_isnone(L, 3) ? 3 : 0;  /* 'env' index or 0 if no 'env' */
-            let status = lauxlib.luaL_loadfilex(L, fname, mode);
-            return load_aux(L, status, env);
-        };
-
-        const dofilecont = function(L, d1, d2) {
-            return lua.lua_gettop(L) - 1;
-        };
-
-        const luaB_dofile = function(L) {
-            let fname = lauxlib.luaL_optstring(L, 1, null);
-            lua.lua_settop(L, 1);
-            if (lauxlib.luaL_loadfile(L, fname) !== lua.LUA_OK)
-                return lua.lua_error(L);
-            lua.lua_callk(L, 0, lua.LUA_MULTRET, 0, dofilecont);
-            return dofilecont(L, 0, 0);
-        };
-
-        base_funcs.loadfile = luaB_loadfile;
-        base_funcs.dofile   = luaB_dofile;
-    }
+if (!WEB) {
+
+    const fs = require('fs');
+
+    const luaB_loadfile = function(L) {
+        let fname = lauxlib.luaL_optstring(L, 1, null);
+        let mode = lauxlib.luaL_optstring(L, 2, null);
+        let env = !lua.lua_isnone(L, 3) ? 3 : 0;  /* 'env' index or 0 if no 'env' */
+        let status = lauxlib.luaL_loadfilex(L, fname, mode);
+        return load_aux(L, status, env);
+    };
+
+    const dofilecont = function(L, d1, d2) {
+        return lua.lua_gettop(L) - 1;
+    };
+
+    const luaB_dofile = function(L) {
+        let fname = lauxlib.luaL_optstring(L, 1, null);
+        lua.lua_settop(L, 1);
+        if (lauxlib.luaL_loadfile(L, fname) !== lua.LUA_OK)
+            return lua.lua_error(L);
+        lua.lua_callk(L, 0, lua.LUA_MULTRET, 0, dofilecont);
+        return dofilecont(L, 0, 0);
+    };
+
+    base_funcs.loadfile = luaB_loadfile;
+    base_funcs.dofile   = luaB_dofile;
 
 }
 
diff --git a/src/ldblib.js b/src/ldblib.js
index fbf31e8..90f08cd 100644
--- a/src/ldblib.js
+++ b/src/ldblib.js
@@ -397,40 +397,33 @@ const dblib = {
 };
 
 // Only with Node
-if (typeof require === "function") {
-    let fs = false;
-    try {
-        fs = require('fs');
-    } catch (e) {}
-
-    if (fs) {
-        const readlineSync = require('readline-sync');
-        readlineSync.setDefaultOptions({
-            prompt: 'lua_debug> '
-        });
-
-        // TODO: if in browser, use a designated input in the DOM ?
-        const db_debug = function(L) {
-            for (;;) {
-                let input = readlineSync.prompt();
-
-                if (input === "cont")
-                    return 0;
-
-                if (input.length === 0)
-                    continue;
-
-                let buffer = lua.to_luastring(input);
-                if (lauxlib.luaL_loadbuffer(L, buffer, buffer.length, lua.to_luastring("=(debug command)", true))
-                    || lua.lua_pcall(L, 0, 0, 0)) {
-                    lauxlib.lua_writestringerror(`${lua.lua_tojsstring(L, -1)}\n`);
-                }
-                lua.lua_settop(L, 0);  /* remove eventual returns */
+if (!WEB) {
+    const readlineSync = require('readline-sync');
+    readlineSync.setDefaultOptions({
+        prompt: 'lua_debug> '
+    });
+
+    // TODO: if in browser, use a designated input in the DOM ?
+    const db_debug = function(L) {
+        for (;;) {
+            let input = readlineSync.prompt();
+
+            if (input === "cont")
+                return 0;
+
+            if (input.length === 0)
+                continue;
+
+            let buffer = lua.to_luastring(input);
+            if (lauxlib.luaL_loadbuffer(L, buffer, buffer.length, lua.to_luastring("=(debug command)", true))
+                || lua.lua_pcall(L, 0, 0, 0)) {
+                lauxlib.lua_writestringerror(`${lua.lua_tojsstring(L, -1)}\n`);
             }
-        };
+            lua.lua_settop(L, 0);  /* remove eventual returns */
+        }
+    };
 
-        dblib.debug = db_debug;
-    }
+    dblib.debug = db_debug;
 }
 
 const luaopen_debug = function(L) {
diff --git a/src/linit.js b/src/linit.js
index 6cc48b1..4139f20 100644
--- a/src/linit.js
+++ b/src/linit.js
@@ -9,7 +9,6 @@ const lstrlib  = require('./lstrlib.js');
 const ltablib  = require('./ltablib.js');
 const lutf8lib = require('./lutf8lib.js');
 const ldblib   = require('./ldblib.js');
-const liolib   = require('./liolib.js');
 const loslib   = require('./loslib.js');
 const loadlib  = require('./loadlib.js');
 const lualib   = require('./lualib.js');
@@ -19,7 +18,6 @@ const loadedlibs = {
     [lualib.LUA_COLIBNAME]:   lcorolib.luaopen_coroutine,
     [lualib.LUA_DBLIBNAME]:   ldblib.luaopen_debug,
     [lualib.LUA_MATHLIBNAME]: lmathlib.luaopen_math,
-    [lualib.LUA_IOLIBNAME]:   liolib.luaopen_io,
     [lualib.LUA_OSLIBNAME]:   loslib.luaopen_os,
     [lualib.LUA_STRLIBNAME]:  lstrlib.luaopen_string,
     [lualib.LUA_TABLIBNAME]:  ltablib.luaopen_table,
@@ -27,6 +25,8 @@ const loadedlibs = {
     "_G":                     lbaselib.luaopen_base
 };
 
+if (!WEB) loadedlibs[lualib.LUA_IOLIBNAME] = require('./liolib.js').luaopen_io;
+
 const luaL_openlibs = function(L) {
     /* "require" functions from 'loadedlibs' and set results to global table */
     for (let lib in loadedlibs) {
diff --git a/src/loadlib.js b/src/loadlib.js
index e7b1680..c2e867a 100644
--- a/src/loadlib.js
+++ b/src/loadlib.js
@@ -79,28 +79,23 @@ let readable = function(filename) {
     return false;
 };
 // Only with Node
-if (typeof require === "function") {
+if (!WEB) {
 
-    let fs = false;
-    try {
-        fs = require('fs');
-    } catch (e) {}
+    const fs = require('fs');
 
-    if (fs) {
-        readable = function(filename) {
-            let fd = false;
+    readable = function(filename) {
+        let fd = false;
 
-            try {
-                fd = fs.openSync(lua.to_jsstring(filename), 'r');
-            } catch (e) {
-                return false;
-            }
+        try {
+            fd = fs.openSync(lua.to_jsstring(filename), 'r');
+        } catch (e) {
+            return false;
+        }
 
-            fs.closeSync(fd);
+        fs.closeSync(fd);
 
-            return true;
-        };
-    }
+        return true;
+    };
 }
 
 
diff --git a/src/loslib.js b/src/loslib.js
index b93071b..976ab92 100644
--- a/src/loslib.js
+++ b/src/loslib.js
@@ -180,96 +180,87 @@ if (process && process.exit && process.env && process.uptime) {
 
 
 // Only with Node
-if (typeof require === "function") {
-
-    let fs = false;
-    let tmp = false;
-    let child_process = false;
-    try {
-        fs = require('fs');
-        tmp = require('tmp');
-        child_process = require('child_process');
-    } catch (e) {}
-
-    if (fs && tmp) {
-        // TODO: on POSIX system, should create the file
-        const lua_tmpname = function() {
-            return tmp.tmpNameSync();
-        };
-
-        const os_remove = function(L) {
-            let filename = lauxlib.luaL_checkstring(L, 1);
+if (!WEB) {
+
+    const fs = require('fs');
+    const tmp = require('tmp');
+    const child_process = require('child_process');
+
+    // TODO: on POSIX system, should create the file
+    const lua_tmpname = function() {
+        return tmp.tmpNameSync();
+    };
+
+    const os_remove = function(L) {
+        let filename = lauxlib.luaL_checkstring(L, 1);
+        try {
+            if (fs.lstatSync(lua.to_jsstring(filename)).isDirectory()) {
+                fs.rmdirSync(lua.to_jsstring(filename));
+            } else {
+                fs.unlinkSync(lua.to_jsstring(filename));
+            }
+        } catch (e) {
+            return lauxlib.luaL_fileresult(L, false, filename, e);
+        }
+        return lauxlib.luaL_fileresult(L, true);
+    };
+
+    const os_rename = function(L) {
+        let fromname = lua.to_jsstring(lauxlib.luaL_checkstring(L, 1));
+        let toname = lua.to_jsstring(lauxlib.luaL_checkstring(L, 2));
+        try {
+            fs.renameSync(fromname, toname);
+        } catch (e) {
+            return lauxlib.luaL_fileresult(L, false, false, e);
+        }
+        return lauxlib.luaL_fileresult(L, true);
+    };
+
+    const os_tmpname = function(L) {
+        let name = lua_tmpname();
+        if (!name)
+            return lauxlib.luaL_error(L, lua.to_luastring("unable to generate a unique filename"));
+        lua.lua_pushstring(L, lua.to_luastring(name));
+        return 1;
+    };
+
+    syslib.remove = os_remove;
+    syslib.rename = os_rename;
+    syslib.tmpname = os_tmpname;
+
+    const os_execute = function(L) {
+        let cmd = lauxlib.luaL_optstring(L, 1, null);
+        if (cmd !== null) {
             try {
-                if (fs.lstatSync(lua.to_jsstring(filename)).isDirectory()) {
-                    fs.rmdirSync(lua.to_jsstring(filename));
-                } else {
-                    fs.unlinkSync(lua.to_jsstring(filename));
-                }
+                child_process.execSync(
+                    lua.to_jsstring(cmd),
+                    {
+                        stdio: [process.stdin, process.stdout, process.stderr]
+                    }
+                );
             } catch (e) {
-                return lauxlib.luaL_fileresult(L, false, filename, e);
+                return lauxlib.luaL_execresult(L, e);
             }
-            return lauxlib.luaL_fileresult(L, true);
-        };
 
-        const os_rename = function(L) {
-            let fromname = lua.to_jsstring(lauxlib.luaL_checkstring(L, 1));
-            let toname = lua.to_jsstring(lauxlib.luaL_checkstring(L, 2));
+            return lauxlib.luaL_execresult(L, null);
+        } else {
             try {
-                fs.renameSync(fromname, toname);
+                child_process.execSync(
+                    lua.to_jsstring(cmd),
+                    {
+                        stdio: [process.stdin, process.stdout, process.stderr]
+                    }
+                );
+                lua.lua_pushboolean(L, 1);
             } catch (e) {
-                return lauxlib.luaL_fileresult(L, false, false, e);
+                lua.lua_pushboolean(L, 0);
             }
-            return lauxlib.luaL_fileresult(L, true);
-        };
-
-        const os_tmpname = function(L) {
-            let name = lua_tmpname();
-            if (!name)
-                return lauxlib.luaL_error(L, lua.to_luastring("unable to generate a unique filename"));
-            lua.lua_pushstring(L, lua.to_luastring(name));
-            return 1;
-        };
-
-        syslib.remove = os_remove;
-        syslib.rename = os_rename;
-        syslib.tmpname = os_tmpname;
-    }
 
-    if (child_process) {
-        const os_execute = function(L) {
-            let cmd = lauxlib.luaL_optstring(L, 1, null);
-            if (cmd !== null) {
-                try {
-                    child_process.execSync(
-                        lua.to_jsstring(cmd),
-                        {
-                            stdio: [process.stdin, process.stdout, process.stderr]
-                        }
-                    );
-                } catch (e) {
-                    return lauxlib.luaL_execresult(L, e);
-                }
-
-                return lauxlib.luaL_execresult(L, null);
-            } else {
-                try {
-                    child_process.execSync(
-                        lua.to_jsstring(cmd),
-                        {
-                            stdio: [process.stdin, process.stdout, process.stderr]
-                        }
-                    );
-                    lua.lua_pushboolean(L, 1);
-                } catch (e) {
-                    lua.lua_pushboolean(L, 0);
-                }
-
-                return 1;
-            }
-        };
+            return 1;
+        }
+    };
 
-        syslib.execute = os_execute;
-    }
+    syslib.execute = os_execute;
 
 }
 
diff --git a/src/lualib.js b/src/lualib.js
index 549ab28..ed02273 100644
--- a/src/lualib.js
+++ b/src/lualib.js
@@ -14,9 +14,11 @@ const LUA_TABLIBNAME = "table";
 module.exports.LUA_TABLIBNAME = LUA_TABLIBNAME;
 module.exports[LUA_TABLIBNAME] = require("./ltablib.js").luaopen_table;
 
-const LUA_IOLIBNAME = "io";
-module.exports.LUA_IOLIBNAME = LUA_IOLIBNAME;
-module.exports[LUA_IOLIBNAME] = require("./liolib.js").luaopen_io;
+if (!WEB) {
+    const LUA_IOLIBNAME = "io";
+    module.exports.LUA_IOLIBNAME = LUA_IOLIBNAME;
+    module.exports[LUA_IOLIBNAME] = require("./liolib.js").luaopen_io;
+}
 
 const LUA_OSLIBNAME = "os";
 module.exports.LUA_OSLIBNAME = LUA_OSLIBNAME;