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Add ability to override library that bindgen loads in at runtime via the environment #28

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Add ability to override library that bindgen loads in at runtime via the environment #28

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25 changes: 18 additions & 7 deletions templates/sys.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -55,16 +55,25 @@ function _uniffiLoad() {
{%- endmatch %}

// Get the path to the lib to load

// 1. Use the library passed in the environment with the highest precidence
let libraryPath = process.env[`${library.toUpperCase()}_PATH`];
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@1egoman 1egoman Mar 17, 2026 •
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Note to self: Before merging, this needs to be documented somewhere (maybe in --help?)


// 2. Or, fallback to the at build time defined mechanism
{% match out_lib_path -%}
{%- when LibPath::Omitted -%}
const libraryPath = join(libraryDirectory, `${library}.${ext}`);
if (!libraryPath) {
libraryPath = join(libraryDirectory, `${library}.${ext}`);
}

{% when LibPath::Literal(literal) %}
{%- if literal.is_absolute() -%}
const libraryPath = "{{ literal }}";
{%- else -%}
const libraryPath = join(libraryDirectory, "{{ literal }}");
{%- endif -%}
if (!libraryPath) {
{%- if literal.is_absolute() -%}
libraryPath = "{{ literal }}";
{%- else -%}
libraryPath = join(libraryDirectory, "{{ literal }}");
{%- endif -%}
}

{% when LibPath::Modules(mods) %}
let libPathModule;
Expand Down Expand Up @@ -105,7 +114,9 @@ function _uniffiLoad() {
throw new Error(messageFragments.join('\n'));
}

const libraryPath = libPathModule.default().path;
if (!libraryPath) {
libraryPath = libPathModule.default().path;
}

{% endmatch %}

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