font/packages/zen/dist/wasm/zen.js

/**
 * Cut a static font out of the variable one, at the settings on the page.
 *
 * `at` names the place on the axes, `wght=497` or `ELSH=40`, comma separated.
 * `features` are stylistic set tags (`ss01`, `ss04`) to bake in, comma
 * separated too. `width` and `track` are baked into the outlines and advances,
 * so the file needs no CSS to carry the setting. The bytes come back for the page to hand to a download — nothing
 * is uploaded and no server sees the font or the settings.
 * @param {Uint8Array} font
 * @param {string} at
 * @param {number} width
 * @param {number} track
 * @param {string} features
 * @param {string} family
 * @param {string} style
 * @param {string} notice
 * @returns {Uint8Array}
 */
export function cut(font, at, width, track, features, family, style, notice) {
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(font, wasm.__wbindgen_export);
        const len0 = WASM_VECTOR_LEN;
        const ptr1 = passStringToWasm0(at, wasm.__wbindgen_export, wasm.__wbindgen_export2);
        const len1 = WASM_VECTOR_LEN;
        const ptr2 = passStringToWasm0(features, wasm.__wbindgen_export, wasm.__wbindgen_export2);
        const len2 = WASM_VECTOR_LEN;
        const ptr3 = passStringToWasm0(family, wasm.__wbindgen_export, wasm.__wbindgen_export2);
        const len3 = WASM_VECTOR_LEN;
        const ptr4 = passStringToWasm0(style, wasm.__wbindgen_export, wasm.__wbindgen_export2);
        const len4 = WASM_VECTOR_LEN;
        const ptr5 = passStringToWasm0(notice, wasm.__wbindgen_export, wasm.__wbindgen_export2);
        const len5 = WASM_VECTOR_LEN;
        wasm.cut(retptr, ptr0, len0, ptr1, len1, width, track, ptr2, len2, ptr3, len3, ptr4, len4, ptr5, len5);
        var r0 = getDataViewMemory0().getInt32(retptr + 4 * 0, true);
        var r1 = getDataViewMemory0().getInt32(retptr + 4 * 1, true);
        var r2 = getDataViewMemory0().getInt32(retptr + 4 * 2, true);
        var r3 = getDataViewMemory0().getInt32(retptr + 4 * 3, true);
        if (r3) {
            throw takeObject(r2);
        }
        var v7 = getArrayU8FromWasm0(r0, r1).slice();
        wasm.__wbindgen_export3(r0, r1 * 1, 1);
        return v7;
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
    }
}

/**
 * Search a candidate's parameter space for the closest match to a target face.
 *
 * Both fonts come in as bytes. Nothing is uploaded — this runs in the tab.
 * @param {Uint8Array} target
 * @param {Uint8Array} candidate
 * @param {string} text
 * @returns {any}
 */
export function fit_to(target, candidate, text) {
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(target, wasm.__wbindgen_export);
        const len0 = WASM_VECTOR_LEN;
        const ptr1 = passArray8ToWasm0(candidate, wasm.__wbindgen_export);
        const len1 = WASM_VECTOR_LEN;
        const ptr2 = passStringToWasm0(text, wasm.__wbindgen_export, wasm.__wbindgen_export2);
        const len2 = WASM_VECTOR_LEN;
        wasm.fit_to(retptr, ptr0, len0, ptr1, len1, ptr2, len2);
        var r0 = getDataViewMemory0().getInt32(retptr + 4 * 0, true);
        var r1 = getDataViewMemory0().getInt32(retptr + 4 * 1, true);
        var r2 = getDataViewMemory0().getInt32(retptr + 4 * 2, true);
        if (r2) {
            throw takeObject(r1);
        }
        return takeObject(r0);
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
    }
}

/**
 * Per-pair optical corrections, in em, for a string.
 *
 * `target` is the white to aim each join at. Pass 0 to use the string's own
 * median, which is the right default for a wordmark: the pairs are judged against
 * each other rather than against a number from somewhere else.
 * @param {Uint8Array} font
 * @param {string} text
 * @param {number} wght
 * @param {number} target
 * @returns {any}
 */
export function kern_text(font, text, wght, target) {
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(font, wasm.__wbindgen_export);
        const len0 = WASM_VECTOR_LEN;
        const ptr1 = passStringToWasm0(text, wasm.__wbindgen_export, wasm.__wbindgen_export2);
        const len1 = WASM_VECTOR_LEN;
        wasm.kern_text(retptr, ptr0, len0, ptr1, len1, wght, target);
        var r0 = getDataViewMemory0().getInt32(retptr + 4 * 0, true);
        var r1 = getDataViewMemory0().getInt32(retptr + 4 * 1, true);
        var r2 = getDataViewMemory0().getInt32(retptr + 4 * 2, true);
        if (r2) {
            throw takeObject(r1);
        }
        return takeObject(r0);
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
    }
}

/**
 * Metrics and the proportions that decide whether one face can stand in for
 * another: stem and bar as fractions of cap, and their ratio.
 * @param {Uint8Array} font
 * @param {number} wght
 * @returns {any}
 */
export function measure(font, wght) {
    try {
        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
        const ptr0 = passArray8ToWasm0(font, wasm.__wbindgen_export);
        const len0 = WASM_VECTOR_LEN;
        wasm.measure(retptr, ptr0, len0, wght);
        var r0 = getDataViewMemory0().getInt32(retptr + 4 * 0, true);
        var r1 = getDataViewMemory0().getInt32(retptr + 4 * 1, true);
        var r2 = getDataViewMemory0().getInt32(retptr + 4 * 2, true);
        if (r2) {
            throw takeObject(r1);
        }
        return takeObject(r0);
    } finally {
        wasm.__wbindgen_add_to_stack_pointer(16);
    }
}

/**
 * The presets, so a page renders the same five names the CSS does.
 * @returns {any}
 */
export function presets() {
    const ret = wasm.presets();
    return takeObject(ret);
}
function __wbg_get_imports() {
    const import0 = {
        __proto__: null,
        __wbindgen_cast_0000000000000001: function(arg0, arg1) {
            // Cast intrinsic for `Ref(String) -> Externref`.
            const ret = getStringFromWasm0(arg0, arg1);
            return addHeapObject(ret);
        },
    };
    return {
        __proto__: null,
        "./zen_bg.js": import0,
    };
}

function addHeapObject(obj) {
    if (heap_next === heap.length) heap.push(heap.length + 1);
    const idx = heap_next;
    heap_next = heap[idx];

    heap[idx] = obj;
    return idx;
}

function dropObject(idx) {
    if (idx < 1028) return;
    heap[idx] = heap_next;
    heap_next = idx;
}

function getArrayU8FromWasm0(ptr, len) {
    ptr = ptr >>> 0;
    return getUint8ArrayMemory0().subarray(ptr / 1, ptr / 1 + len);
}

let cachedDataViewMemory0 = null;
function getDataViewMemory0() {
    if (cachedDataViewMemory0 === null || cachedDataViewMemory0.buffer.detached === true || (cachedDataViewMemory0.buffer.detached === undefined && cachedDataViewMemory0.buffer !== wasm.memory.buffer)) {
        cachedDataViewMemory0 = new DataView(wasm.memory.buffer);
    }
    return cachedDataViewMemory0;
}

function getStringFromWasm0(ptr, len) {
    return decodeText(ptr >>> 0, len);
}

let cachedUint8ArrayMemory0 = null;
function getUint8ArrayMemory0() {
    if (cachedUint8ArrayMemory0 === null || cachedUint8ArrayMemory0.byteLength === 0) {
        cachedUint8ArrayMemory0 = new Uint8Array(wasm.memory.buffer);
    }
    return cachedUint8ArrayMemory0;
}

function getObject(idx) { return heap[idx]; }

let heap = new Array(1024).fill(undefined);
heap.push(undefined, null, true, false);

let heap_next = heap.length;

function passArray8ToWasm0(arg, malloc) {
    const ptr = malloc(arg.length * 1, 1) >>> 0;
    getUint8ArrayMemory0().set(arg, ptr / 1);
    WASM_VECTOR_LEN = arg.length;
    return ptr;
}

function passStringToWasm0(arg, malloc, realloc) {
    if (realloc === undefined) {
        const buf = cachedTextEncoder.encode(arg);
        const ptr = malloc(buf.length, 1) >>> 0;
        getUint8ArrayMemory0().subarray(ptr, ptr + buf.length).set(buf);
        WASM_VECTOR_LEN = buf.length;
        return ptr;
    }

    let len = arg.length;
    let ptr = malloc(len, 1) >>> 0;

    const mem = getUint8ArrayMemory0();

    let offset = 0;

    for (; offset < len; offset++) {
        const code = arg.charCodeAt(offset);
        if (code > 0x7F) break;
        mem[ptr + offset] = code;
    }
    if (offset !== len) {
        if (offset !== 0) {
            arg = arg.slice(offset);
        }
        ptr = realloc(ptr, len, len = offset + arg.length * 3, 1) >>> 0;
        const view = getUint8ArrayMemory0().subarray(ptr + offset, ptr + len);
        const ret = cachedTextEncoder.encodeInto(arg, view);

        offset += ret.written;
        ptr = realloc(ptr, len, offset, 1) >>> 0;
    }

    WASM_VECTOR_LEN = offset;
    return ptr;
}

function takeObject(idx) {
    const ret = getObject(idx);
    dropObject(idx);
    return ret;
}

let cachedTextDecoder = new TextDecoder('utf-8', { ignoreBOM: true, fatal: true });
cachedTextDecoder.decode();
const MAX_SAFARI_DECODE_BYTES = 2146435072;
let numBytesDecoded = 0;
function decodeText(ptr, len) {
    numBytesDecoded += len;
    if (numBytesDecoded >= MAX_SAFARI_DECODE_BYTES) {
        cachedTextDecoder = new TextDecoder('utf-8', { ignoreBOM: true, fatal: true });
        cachedTextDecoder.decode();
        numBytesDecoded = len;
    }
    return cachedTextDecoder.decode(getUint8ArrayMemory0().subarray(ptr, ptr + len));
}

const cachedTextEncoder = new TextEncoder();

if (!('encodeInto' in cachedTextEncoder)) {
    cachedTextEncoder.encodeInto = function (arg, view) {
        const buf = cachedTextEncoder.encode(arg);
        view.set(buf);
        return {
            read: arg.length,
            written: buf.length
        };
    };
}

let WASM_VECTOR_LEN = 0;

let wasmModule, wasmInstance, wasm;
function __wbg_finalize_init(instance, module) {
    wasmInstance = instance;
    wasm = instance.exports;
    wasmModule = module;
    cachedDataViewMemory0 = null;
    cachedUint8ArrayMemory0 = null;
    return wasm;
}

async function __wbg_load(module, imports) {
    if (typeof Response === 'function' && module instanceof Response) {
        if (!module.ok) {
            throw new Error(`failed to fetch Wasm: ${module.status} ${module.statusText} fetching '${module.url}'`);
        }

        if (typeof WebAssembly.instantiateStreaming === 'function') {
            try {
                return await WebAssembly.instantiateStreaming(module, imports);
            } catch (e) {
                const validResponse = expectedResponseType(module.type);

                if (validResponse && module.headers.get('Content-Type') !== 'application/wasm') {
                    console.warn("`WebAssembly.instantiateStreaming` failed because your server does not serve Wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error:\n", e);

                } else { throw e; }
            }
        }

        const bytes = await module.arrayBuffer();
        return await WebAssembly.instantiate(bytes, imports);
    } else {
        const instance = await WebAssembly.instantiate(module, imports);

        if (instance instanceof WebAssembly.Instance) {
            return { instance, module };
        } else {
            return instance;
        }
    }

    function expectedResponseType(type) {
        switch (type) {
            case 'basic': case 'cors': case 'default': return true;
        }
        return false;
    }
}

function initSync(module) {
    if (wasm !== undefined) return wasm;


    if (module !== undefined) {
        if (Object.getPrototypeOf(module) === Object.prototype) {
            ({module} = module)
        } else {
            console.warn('using deprecated parameters for `initSync()`; pass a single object instead')
        }
    }

    const imports = __wbg_get_imports();
    if (!(module instanceof WebAssembly.Module)) {
        module = new WebAssembly.Module(module);
    }
    const instance = new WebAssembly.Instance(module, imports);
    return __wbg_finalize_init(instance, module);
}

async function __wbg_init(module_or_path) {
    if (wasm !== undefined) return wasm;


    if (module_or_path !== undefined) {
        if (Object.getPrototypeOf(module_or_path) === Object.prototype) {
            ({module_or_path} = module_or_path)
        } else {
            console.warn('using deprecated parameters for the initialization function; pass a single object instead')
        }
    }

    if (module_or_path === undefined) {
        module_or_path = new URL('zen_bg.wasm', import.meta.url);
    }
    const imports = __wbg_get_imports();

    if (typeof module_or_path === 'string' || (typeof Request === 'function' && module_or_path instanceof Request) || (typeof URL === 'function' && module_or_path instanceof URL)) {
        module_or_path = fetch(module_or_path);
    }

    const { instance, module } = await __wbg_load(await module_or_path, imports);

    return __wbg_finalize_init(instance, module);
}

export { initSync, __wbg_init as default };