@undecaf/zbar-wasm - npm Package Compare versions

Comparing version 0.10.1 to 0.11.0

dist/index.d.ts

@@ -22,3 +22,19 @@ interface ZBarInstance extends Record<string, WebAssembly.ExportValue | ArrayBuffer> {
 
-declare const getInstance: () => Promise<ZBarInstance>;
+/**
+ * Arguments used for building a `ZBarInstance`
+ */
+type ZBarModuleArgs = {
+    locateFile?: (filename: string, directory: string) => string;
+};
+/**
+ * Causes a new `ZBarInstance` built with the specified arguments
+ * to be returned by subsequent `getInstance()` calls.
+ */
+declare function setModuleArgs(args?: ZBarModuleArgs): void;
+/**
+ * Returns a `ZBarInstance` built with the arguments set by `setModuleArgs()`,
+ * or built without any arguments.
+ * Successive calls return the same instance until `setModuleArgs()` is called.
+ */
+declare function getInstance(): Promise<ZBarInstance>;
 
@@ -139,2 +155,2 @@ declare enum ZBarSymbolType {
 
-export { type Point, ZBarConfigType, ZBarImage, ZBarOrientation, ZBarScanner, ZBarSymbol, ZBarSymbolType, getDefaultScanner, getInstance, scanGrayBuffer, scanImageData, scanRGBABuffer };
+export { type Point, ZBarConfigType, ZBarImage, type ZBarModuleArgs, ZBarOrientation, ZBarScanner, ZBarSymbol, ZBarSymbolType, getDefaultScanner, getInstance, scanGrayBuffer, scanImageData, scanRGBABuffer, setModuleArgs };

dist/index.js

@@ -1,2 +0,2 @@
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0,(Z=e.ZBarSymbolType||(e.ZBarSymbolType={}))[Z.ZBAR_NONE=0]="ZBAR_NONE",Z[Z.ZBAR_PARTIAL=1]="ZBAR_PARTIAL",Z[Z.ZBAR_EAN2=2]="ZBAR_EAN2",Z[Z.ZBAR_EAN5=5]="ZBAR_EAN5",Z[Z.ZBAR_EAN8=8]="ZBAR_EAN8",Z[Z.ZBAR_UPCE=9]="ZBAR_UPCE",Z[Z.ZBAR_ISBN10=10]="ZBAR_ISBN10",Z[Z.ZBAR_UPCA=12]="ZBAR_UPCA",Z[Z.ZBAR_EAN13=13]="ZBAR_EAN13",Z[Z.ZBAR_ISBN13=14]="ZBAR_ISBN13",Z[Z.ZBAR_COMPOSITE=15]="ZBAR_COMPOSITE",Z[Z.ZBAR_I25=25]="ZBAR_I25",Z[Z.ZBAR_DATABAR=34]="ZBAR_DATABAR",Z[Z.ZBAR_DATABAR_EXP=35]="ZBAR_DATABAR_EXP",Z[Z.ZBAR_CODABAR=38]="ZBAR_CODABAR",Z[Z.ZBAR_CODE39=39]="ZBAR_CODE39",Z[Z.ZBAR_PDF417=57]="ZBAR_PDF417",Z[Z.ZBAR_QRCODE=64]="ZBAR_QRCODE",Z[Z.ZBAR_SQCODE=80]="ZBAR_SQCODE",Z[Z.ZBAR_CODE93=93]="ZBAR_CODE93",Z[Z.ZBAR_CODE128=128]="ZBAR_CODE128",Z[Z.ZBAR_SYMBOL=255]="ZBAR_SYMBOL",Z[Z.ZBAR_ADDON2=512]="ZBAR_ADDON2",Z[Z.ZBAR_ADDON5=1280]="ZBAR_ADDON5",Z[Z.ZBAR_ADDON=1792]="ZBAR_ADDON",e.ZBarConfigType=void 0,(I=e.ZBarConfigType||(e.ZBarConfigType={}))[I.ZBAR_CFG_ENABLE=0]="ZBAR_CFG_ENABLE",I[I.ZBAR_CFG_ADD_CHECK=1]="ZBAR_CFG_ADD_CHECK",I[I.ZBAR_CFG_EMIT_CHECK=2]="ZBAR_CFG_EMIT_CHECK",I[I.ZBAR_CFG_ASCII=3]="ZBAR_CFG_ASCII",I[I.ZBAR_CFG_BINARY=4]="ZBAR_CFG_BINARY",I[I.ZBAR_CFG_NUM=5]="ZBAR_CFG_NUM",I[I.ZBAR_CFG_MIN_LEN=32]="ZBAR_CFG_MIN_LEN",I[I.ZBAR_CFG_MAX_LEN=33]="ZBAR_CFG_MAX_LEN",I[I.ZBAR_CFG_UNCERTAINTY=64]="ZBAR_CFG_UNCERTAINTY",I[I.ZBAR_CFG_POSITION=128]="ZBAR_CFG_POSITION",I[I.ZBAR_CFG_TEST_INVERTED=129]="ZBAR_CFG_TEST_INVERTED",I[I.ZBAR_CFG_X_DENSITY=256]="ZBAR_CFG_X_DENSITY",I[I.ZBAR_CFG_Y_DENSITY=257]="ZBAR_CFG_Y_DENSITY",e.ZBarOrientation=void 0,(S=e.ZBarOrientation||(e.ZBarOrientation={}))[S.ZBAR_ORIENT_UNKNOWN=-1]="ZBAR_ORIENT_UNKNOWN",S[S.ZBAR_ORIENT_UP=0]="ZBAR_ORIENT_UP",S[S.ZBAR_ORIENT_RIGHT=1]="ZBAR_ORIENT_RIGHT",S[S.ZBAR_ORIENT_DOWN=2]="ZBAR_ORIENT_DOWN",S[S.ZBAR_ORIENT_LEFT=3]="ZBAR_ORIENT_LEFT";class C{constructor(e,t){this.ptr=e,this.inst=t}checkAlive(){if(!this.ptr)throw Error("Call after destroyed")}getPointer(){return this.checkAlive(),this.ptr}}class w{constructor(e,t){this.ptr=e,this.ptr32=e>>2,this.buf=t,this.HEAP8=new Int8Array(t),this.HEAPU32=new Uint32Array(t),this.HEAP32=new Int32Array(t)}}class N extends w{get type(){return this.HEAPU32[this.ptr32]}get data(){const e=this.HEAPU32[this.ptr32+4],t=this.HEAPU32[this.ptr32+5];return Int8Array.from(this.HEAP8.subarray(t,t+e))}get points(){const e=this.HEAPU32[this.ptr32+7],t=this.HEAPU32[this.ptr32+8]>>2,r=[];for(let n=0;n<e;++n){const e=this.HEAP32[t+2*n],i=this.HEAP32[t+2*n+1];r.push({x:e,y:i})}return r}get orientation(){return this.HEAP32[this.ptr32+9]}get next(){const e=this.HEAPU32[this.ptr32+11];return e?new N(e,this.buf):null}get time(){return this.HEAPU32[this.ptr32+13]}get cacheCount(){return this.HEAP32[this.ptr32+14]}get quality(){return this.HEAP32[this.ptr32+15]}}class T extends w{get head(){const e=this.HEAPU32[this.ptr32+2];return e?new N(e,this.buf):null}}class O{constructor(t){this.type=t.type,this.typeName=e.ZBarSymbolType[this.type],this.data=t.data,this.points=t.points,this.orientation=t.orientation,this.time=t.time,this.cacheCount=t.cacheCount,this.quality=t.quality}static createSymbolsFromPtr(e,t){if(0==e)return[];let r=new T(e,t).head;const n=[];for(;null!==r;)n.push(new O(r)),r=r.next;return n}decode(e){return new TextDecoder(e).decode(this.data)}}class P extends C{static createFromGrayBuffer(e,r,n,i=0){return t(this,void 0,void 0,(function*(){const t=yield b(),o=new Uint8Array(n),s=e*r;if(s!==o.byteLength)throw Error(`data length (${o.byteLength} bytes) does not match width and height (${s} bytes)`);const a=t._malloc(s);t.HEAPU8.set(o,a);return new this(t._Image_create(e,r,808466521,a,s,i),t)}))}static createFromRGBABuffer(e,r,n,i=0){return t(this,void 0,void 0,(function*(){const t=yield b(),o=new Uint8Array(n),s=e*r;if(4*s!==o.byteLength)throw Error(`data length 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e=this.inst._ImageScanner_get_results(this.ptr);return O.createSymbolsFromPtr(e,this.inst.HEAPU8.buffer)}scan(e){return this.checkAlive(),this.inst._ImageScanner_scan(this.ptr,e.getPointer())}}const F=()=>t(void 0,void 0,void 0,(function*(){const t=yield D.create();return t.setConfig(e.ZBarSymbolType.ZBAR_NONE,e.ZBarConfigType.ZBAR_CFG_BINARY,1),t}));let U;const G=(e,r)=>t(void 0,void 0,void 0,(function*(){void 0===r&&(r=U||(yield F()),U=r);const t=r.scan(e);if(t<0)throw Error("Scan Failed");return 0===t?[]:e.getSymbols()})),H=(e,r,n,i)=>t(void 0,void 0,void 0,(function*(){const t=yield P.createFromRGBABuffer(r,n,e),o=yield G(t,i);return t.destroy(),o}));return e.ZBarImage=P,e.ZBarScanner=D,e.ZBarSymbol=O,e.getDefaultScanner=F,e.getInstance=b,e.scanGrayBuffer=(e,r,n,i)=>t(void 0,void 0,void 0,(function*(){const t=yield P.createFromGrayBuffer(r,n,e),o=yield G(t,i);return t.destroy(),o})),e.scanImageData=(e,r)=>t(void 0,void 0,void 0,(function*(){return yield H(e.data.buffer,e.width,e.height,r)})),e.scanRGBABuffer=H,Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),e}({});
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d,y,m,R=i.print||console.log.bind(console),B=i.printErr||console.error.bind(console);Object.assign(i,u),u=null,i.arguments&&i.arguments,i.thisProgram&&i.thisProgram,i.quit&&i.quit,i.wasmBinary&&(d=i.wasmBinary),i.noExitRuntime,"object"!=typeof WebAssembly&&T("no native wasm support detected");var v,E,b=!1;function Z(){var t=y.buffer;i.HEAP8=new Int8Array(t),i.HEAP16=new Int16Array(t),i.HEAP32=new Int32Array(t),i.HEAPU8=v=new Uint8Array(t),i.HEAPU16=new Uint16Array(t),i.HEAPU32=E=new Uint32Array(t),i.HEAPF32=new Float32Array(t),i.HEAPF64=new Float64Array(t)}var I=[],S=[],C=[],w=0,N=null;function T(t){i.onAbort&&i.onAbort(t),B(t="Aborted("+t+")"),b=!0,t+=". 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0,void 0,(function*(){const e=yield B(t);if(e)return e;throw Error("WASM was not loaded")}))}()}function b(){return e(this,void 0,void 0,(function*(){return v||E(),yield v}))}var Z,I,S;t.ZBarSymbolType=void 0,(Z=t.ZBarSymbolType||(t.ZBarSymbolType={}))[Z.ZBAR_NONE=0]="ZBAR_NONE",Z[Z.ZBAR_PARTIAL=1]="ZBAR_PARTIAL",Z[Z.ZBAR_EAN2=2]="ZBAR_EAN2",Z[Z.ZBAR_EAN5=5]="ZBAR_EAN5",Z[Z.ZBAR_EAN8=8]="ZBAR_EAN8",Z[Z.ZBAR_UPCE=9]="ZBAR_UPCE",Z[Z.ZBAR_ISBN10=10]="ZBAR_ISBN10",Z[Z.ZBAR_UPCA=12]="ZBAR_UPCA",Z[Z.ZBAR_EAN13=13]="ZBAR_EAN13",Z[Z.ZBAR_ISBN13=14]="ZBAR_ISBN13",Z[Z.ZBAR_COMPOSITE=15]="ZBAR_COMPOSITE",Z[Z.ZBAR_I25=25]="ZBAR_I25",Z[Z.ZBAR_DATABAR=34]="ZBAR_DATABAR",Z[Z.ZBAR_DATABAR_EXP=35]="ZBAR_DATABAR_EXP",Z[Z.ZBAR_CODABAR=38]="ZBAR_CODABAR",Z[Z.ZBAR_CODE39=39]="ZBAR_CODE39",Z[Z.ZBAR_PDF417=57]="ZBAR_PDF417",Z[Z.ZBAR_QRCODE=64]="ZBAR_QRCODE",Z[Z.ZBAR_SQCODE=80]="ZBAR_SQCODE",Z[Z.ZBAR_CODE93=93]="ZBAR_CODE93",Z[Z.ZBAR_CODE128=128]="ZBAR_CODE128",Z[Z.ZBAR_SYMBOL=255]="ZBAR_SYMBOL",Z[Z.ZBAR_ADDON2=512]="ZBAR_ADDON2",Z[Z.ZBAR_ADDON5=1280]="ZBAR_ADDON5",Z[Z.ZBAR_ADDON=1792]="ZBAR_ADDON",t.ZBarConfigType=void 0,(I=t.ZBarConfigType||(t.ZBarConfigType={}))[I.ZBAR_CFG_ENABLE=0]="ZBAR_CFG_ENABLE",I[I.ZBAR_CFG_ADD_CHECK=1]="ZBAR_CFG_ADD_CHECK",I[I.ZBAR_CFG_EMIT_CHECK=2]="ZBAR_CFG_EMIT_CHECK",I[I.ZBAR_CFG_ASCII=3]="ZBAR_CFG_ASCII",I[I.ZBAR_CFG_BINARY=4]="ZBAR_CFG_BINARY",I[I.ZBAR_CFG_NUM=5]="ZBAR_CFG_NUM",I[I.ZBAR_CFG_MIN_LEN=32]="ZBAR_CFG_MIN_LEN",I[I.ZBAR_CFG_MAX_LEN=33]="ZBAR_CFG_MAX_LEN",I[I.ZBAR_CFG_UNCERTAINTY=64]="ZBAR_CFG_UNCERTAINTY",I[I.ZBAR_CFG_POSITION=128]="ZBAR_CFG_POSITION",I[I.ZBAR_CFG_TEST_INVERTED=129]="ZBAR_CFG_TEST_INVERTED",I[I.ZBAR_CFG_X_DENSITY=256]="ZBAR_CFG_X_DENSITY",I[I.ZBAR_CFG_Y_DENSITY=257]="ZBAR_CFG_Y_DENSITY",t.ZBarOrientation=void 0,(S=t.ZBarOrientation||(t.ZBarOrientation={}))[S.ZBAR_ORIENT_UNKNOWN=-1]="ZBAR_ORIENT_UNKNOWN",S[S.ZBAR_ORIENT_UP=0]="ZBAR_ORIENT_UP",S[S.ZBAR_ORIENT_RIGHT=1]="ZBAR_ORIENT_RIGHT",S[S.ZBAR_ORIENT_DOWN=2]="ZBAR_ORIENT_DOWN",S[S.ZBAR_ORIENT_LEFT=3]="ZBAR_ORIENT_LEFT";class C{constructor(t,e){this.ptr=t,this.inst=e}checkAlive(){if(!this.ptr)throw Error("Call after destroyed")}getPointer(){return this.checkAlive(),this.ptr}}class w{constructor(t,e){this.ptr=t,this.ptr32=t>>2,this.buf=e,this.HEAP8=new Int8Array(e),this.HEAPU32=new Uint32Array(e),this.HEAP32=new Int32Array(e)}}class N extends w{get type(){return this.HEAPU32[this.ptr32]}get data(){const t=this.HEAPU32[this.ptr32+4],e=this.HEAPU32[this.ptr32+5];return Int8Array.from(this.HEAP8.subarray(e,e+t))}get points(){const t=this.HEAPU32[this.ptr32+7],e=this.HEAPU32[this.ptr32+8]>>2,r=[];for(let n=0;n<t;++n){const t=this.HEAP32[e+2*n],i=this.HEAP32[e+2*n+1];r.push({x:t,y:i})}return r}get orientation(){return this.HEAP32[this.ptr32+9]}get next(){const t=this.HEAPU32[this.ptr32+11];return t?new N(t,this.buf):null}get time(){return this.HEAPU32[this.ptr32+13]}get cacheCount(){return this.HEAP32[this.ptr32+14]}get quality(){return this.HEAP32[this.ptr32+15]}}class T extends w{get head(){const t=this.HEAPU32[this.ptr32+2];return t?new N(t,this.buf):null}}class O{constructor(e){this.type=e.type,this.typeName=t.ZBarSymbolType[this.type],this.data=e.data,this.points=e.points,this.orientation=e.orientation,this.time=e.time,this.cacheCount=e.cacheCount,this.quality=e.quality}static createSymbolsFromPtr(t,e){if(0==t)return[];let r=new T(t,e).head;const n=[];for(;null!==r;)n.push(new O(r)),r=r.next;return n}decode(t){return new TextDecoder(t).decode(this.data)}}class P extends C{static createFromGrayBuffer(t,r,n,i=0){return e(this,void 0,void 0,(function*(){const e=yield b(),o=new Uint8Array(n),s=t*r;if(s!==o.byteLength)throw Error(`data length (${o.byteLength} bytes) does not match width and height (${s} bytes)`);const a=e._malloc(s);e.HEAPU8.set(o,a);return new this(e._Image_create(t,r,808466521,a,s,i),e)}))}static createFromRGBABuffer(t,r,n,i=0){return e(this,void 0,void 0,(function*(){const e=yield b(),o=new Uint8Array(n),s=t*r;if(4*s!==o.byteLength)throw Error(`data length (${o.byteLength} bytes) does not match width and height (${4*s} bytes)`);const a=e._malloc(s),c=a+s,u=e.HEAPU8;for(let t=a,e=0;t<c;t++,e+=4)u[t]=19595*o[e]+38469*o[e+1]+7472*o[e+2]>>16;return new this(e._Image_create(t,r,808466521,a,s,i),e)}))}destroy(){this.checkAlive(),this.inst._Image_destory(this.ptr),this.ptr=0}getSymbols(){this.checkAlive();const t=this.inst._Image_get_symbols(this.ptr);return O.createSymbolsFromPtr(t,this.inst.HEAPU8.buffer)}}class D extends C{static create(){return e(this,void 0,void 0,(function*(){const t=yield b();return new this(t._ImageScanner_create(),t)}))}destroy(){this.checkAlive(),this.inst._ImageScanner_destory(this.ptr),this.ptr=0}setConfig(t,e,r){return this.checkAlive(),this.inst._ImageScanner_set_config(this.ptr,t,e,r)}enableCache(t=!0){this.checkAlive(),this.inst._ImageScanner_enable_cache(this.ptr,t)}recycleImage(t){this.checkAlive(),this.inst._ImageScanner_recycle_image(this.ptr,t.getPointer())}getResults(){this.checkAlive();const t=this.inst._ImageScanner_get_results(this.ptr);return O.createSymbolsFromPtr(t,this.inst.HEAPU8.buffer)}scan(t){return this.checkAlive(),this.inst._ImageScanner_scan(this.ptr,t.getPointer())}}const F=()=>e(void 0,void 0,void 0,(function*(){const e=yield D.create();return e.setConfig(t.ZBarSymbolType.ZBAR_NONE,t.ZBarConfigType.ZBAR_CFG_BINARY,1),e}));let U;const G=(t,r)=>e(void 0,void 0,void 0,(function*(){void 0===r&&(r=U||(yield F()),U=r);const e=r.scan(t);if(e<0)throw Error("Scan Failed");return 0===e?[]:t.getSymbols()})),H=(t,r,n,i)=>e(void 0,void 0,void 0,(function*(){const e=yield P.createFromRGBABuffer(r,n,t),o=yield G(e,i);return e.destroy(),o}));return t.ZBarImage=P,t.ZBarScanner=D,t.ZBarSymbol=O,t.getDefaultScanner=F,t.getInstance=b,t.scanGrayBuffer=(t,r,n,i)=>e(void 0,void 0,void 0,(function*(){const e=yield P.createFromGrayBuffer(r,n,t),o=yield G(e,i);return e.destroy(),o})),t.scanImageData=(t,r)=>e(void 0,void 0,void 0,(function*(){return yield H(t.data.buffer,t.width,t.height,r)})),t.scanRGBABuffer=H,t.setModuleArgs=E,Object.defineProperty(t,Symbol.toStringTag,{value:"Module"}),t}({});
 //# sourceMappingURL=index.js.map

package.json

 {
   "name": "@undecaf/zbar-wasm",
-  "version": "0.10.1",
+  "version": "0.11.0",
   "description": "A WebAssembly build of the C/C++ ZBar barcode reader",
@@ -5,0 +5,0 @@ "type": "module",

README.md

@@ -26,3 +26,3 @@ # A WebAssembly build of the ZBar Bar Code Reader
 
-:warning: zbar-wasm version 0.10 contains breaking changes with respect to version 0.9, please refer to section [Bundling/deploying zbar-wasm](#bundlingdeploying-zbar-wasm).
+:warning: zbar-wasm versions 0.10 and above contain breaking changes with respect to version 0.9, please refer to section [Bundling/deploying zbar-wasm](#bundlingdeploying-zbar-wasm).
 
@@ -58,3 +58,3 @@
   <script type="module">
-    import * as zbarWasm from 'https://cdn.jsdelivr.net/npm/@undecaf/zbar-wasm@0.10.1/dist/index.js'
+    import * as zbarWasm from 'https://cdn.jsdelivr.net/npm/@undecaf/zbar-wasm@0.11.0/dist/index.js'
 
@@ -93,3 +93,3 @@ (async () => {
   <script type="module">
-    import * as zbarWasm from 'https://cdn.jsdelivr.net/npm/@undecaf/zbar-wasm@0.10.1/dist/index.js'
+    import * as zbarWasm from 'https://cdn.jsdelivr.net/npm/@undecaf/zbar-wasm@0.11.0/dist/index.js'
     ⁝
@@ -102,3 +102,3 @@ ```
     ⁝
-  <script src="https://cdn.jsdelivr.net/npm/@undecaf/zbar-wasm@0.10.1/dist/index.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/@undecaf/zbar-wasm@0.11.0/dist/index.js"></script>
   <script>
@@ -114,5 +114,5 @@ ⁝
 ```shell script
-$ npm install @undecaf/zbar-wasm@0.10.1
+$ npm install @undecaf/zbar-wasm@0.11.0
     or
-$ yarn add @undecaf/zbar-wasm@0.10.1
+$ yarn add @undecaf/zbar-wasm@0.11.0
 ```
@@ -145,3 +145,3 @@
 
-  console.log(ssymbols[0]?.typeName, symbols[0]?.decode())
+  console.log(symbols[0]?.typeName, symbols[0]?.decode())
 })('https://raw.githubusercontent.com/undecaf/zbar-wasm/master/tests/img/qr_code.png')
@@ -160,13 +160,12 @@ ```
 
-zbar-wasm provides ESM and CommonJS modules for Node.js and browsers. One of them needs to be
-bundled in your application. In any case, barcode scanning is delegated to the WebAssembly code
-in file `zbar.wasm`. At runtime, this file can be provided in different ways depending on the
-bundling configuration and on which zbar-wasm module was emitted by the bundler:
+Barcode scanning is always delegated to the WebAssembly code in file `zbar.wasm`.
+zbar-wasm provides various functionally equivalent ESM and CommonJS modules for Node.js and for browsers
+that differ in how `zbar.wasm` is to be provided at runtime:
 
-+ It can be loaded from a CDN by browsers.
-+ It can be bundled as an asset. That asset should be served to browsers as `application/wasm`
++ `zbar.wasm` can be loaded from a CDN by browsers.
++ `zbar.wasm` can be bundled as an asset. That asset should be served to browsers as `application/wasm`
   so that it can be compiled in parallel with being received.
 + Several zbar-wasm modules contain `zbar.wasm` as inline data.
 
-This overview shows which modules are available in zbar-wasm:
+The following overview shows the modules that are available in zbar-wasm. One of them needs to be bundled in your application.
 
@@ -189,4 +188,4 @@ | Path in package           | Module type | Node core modules polyfilled<br>(suitable for browsers) | `zbar.wasm` inlined |
 
-[Building zbar-wasm](#building-zbar-wasm-from-source) runs bundling tests with [Webpack](https://webpack.js.org/), [Rollup](https://rollupjs.org/) and 
-[esbuild](https://esbuild.github.io/) and also tests the resulting bundles. The bundler configuration files
+[Building zbar-wasm](#building-zbar-wasm-from-source) includes testing the bundling process with [Webpack](https://webpack.js.org/), [Rollup](https://rollupjs.org/) and 
+[esbuild](https://esbuild.github.io/) and also testing the resulting bundles. The bundler configuration files
 [`tests/{webpack,rollup,esbuild}.config.js`](https://github.com/undecaf/zbar-wasm/tree/master/tests)
@@ -204,2 +203,29 @@ may be used as a reference of how to achieve a particular bundling result. Each of them covers
 
+### Loading `zbar.wasm` from a custom location
+
+As a last resort, if you cannot make your bundler place `zbar.wasm` where it can be located by the script,
+you can specify an URL or path for that WASM file at runtime:
+
+```javascript
+import { scanImageData, setModuleArgs } from '@undecaf/zbar-wasm';
+    ⁝
+// Call this function once at the beginning
+setModuleArgs({
+  /**
+   * This function must return the URL or path of the WASM file.
+   * 
+   * @param filename default WASM filename ('zbar.wasm')
+   * @param directory default WASM directory (URL or directory of the current script)
+   * @returns {string} URL or path of the WASM file
+   */
+  locateFile: (filename, directory) => {
+      return 'file:///your/wasm/directory/zbar.wasm'
+  }   
+});
+    ⁝
+// Then use the scanner
+const symbols = await scanImageData(...);
+```
+
+
 ## API documentation
@@ -206,0 +232,0 @@

No alert changes

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Number of lines in readme file

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