How to use std library

[pannous]

sorry, how do I use 'lib' flag?

asc test.ts  --lib /assemblyscript/std/portable/
ERROR TS2304: Cannot find name 'allocate_memory'.
 	var x=new Test()


asc test.ts  --lib /assemblyscript/std/

<--- Last few GCs --->

[32451:0x3d15dd0]    13131 ms: Mark-sweep 1278.0 (1329.7) -> 1278.0 (1339.7) MB, 876.9 / 0.0 ms  allocation failure GC in old space requested
[32451:0x3d15dd0]    14015 ms: Mark-sweep 1278.0 (1339.7) -> 1278.0 (1303.2) MB, 883.4 / 0.0 ms  last resort GC in old space requested
[32451:0x3d15dd0]    14882 ms: Mark-sweep 1278.0 (1303.2) -> 1278.0 (1303.2) MB, 866.8 / 0.0 ms  last resort GC in old space requested


<--- JS stacktrace --->

==== JS stack trace =========================================

Security context: 0x22f669425529 <JSObject>
    1: /* anonymous */ [/opt/wasm/assemblyscript/dist/assemblyscript.js:~1] [pc=0xef89d1a870d](this=0x2181f4708ed1 <t map = 0xaab3fd8be11>,e=0x105a15ac1459 <t map = 0xaab3fd8c809>)
    2: /* anonymous */ [/opt/wasm/assemblyscript/dist/assemblyscript.js:~1] [pc=0xef89d1aaf44](this=0x2181f4708ed1 <t map = 0xaab3fd8be11>,e=0x105a15ac1459 <t map = 0xaab3fd8c809>,t=0x3bf00bf822d1 <undefined>)
    3: ...

FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory
 1: node::Abort() [node]
 2: 0x8cea7c [node]
 3: v8::Utils::ReportOOMFailure(char const*, bool) [node]
 4: v8::internal::V8::FatalProcessOutOfMemory(char const*, bool) [node]
 5: v8::internal::Factory::NewUninitializedFixedArray(int) [node]
 6: 0xd88283 [node]
 7: v8::internal::Runtime_GrowArrayElements(int, v8::internal::Object**, v8::internal::Isolate*) [node]
 8: 0xef89d0042fd

[dcodeIO]

The --lib flag adds additional directories to the library path. Top-level library files' exports become globals automatically, while the @global decorator can be used in nested directories.

Basically, --noLib removes the shipped standard library while --lib adds custom standard components and it's also possible to combine both to, for example, replace the standard library entirely.

For memory managers, there are multiple implementations that you can pick from. If the shipped standard library is included, you can do (ideally in the entry file), for example:

import "allocator/tlsf";

to include the TLSF memory allocator in your project. This file will be looked up in the library then and the error about allocate_memory will go away.

[pannous]

Yay, thanks!

import "allocator/arena";
export { allocate_memory, free_memory };

worked for me

fyi (?) tlsf didn't work though:

asc test.ts 
ERROR AS100: Operation not supported.

   set tailRef(value: usize) { store<usize>(0, value, Root.HL_END); }
                                                      ~~~~~~~~~~~
 in (lib)/allocator/tlsf.ts(181,53)

import "allocator/tlsf";
export { allocate_memory, free_memory };
class Test{}
new Test()