@anthropic-ai/bedrock-sdk/internal/to-file.mjs

The official TypeScript library for the Anthropic Bedrock API

import { getName, makeFile, isAsyncIterable } from "./uploads.mjs";
import { checkFileSupport } from "./uploads.mjs";
/**
 * This check adds the arrayBuffer() method type because it is available and used at runtime
 */
const isBlobLike = (value) => value != null &&
    typeof value === 'object' &&
    typeof value.size === 'number' &&
    typeof value.type === 'string' &&
    typeof value.text === 'function' &&
    typeof value.slice === 'function' &&
    typeof value.arrayBuffer === 'function';
/**
 * This check adds the arrayBuffer() method type because it is available and used at runtime
 */
const isFileLike = (value) => value != null &&
    typeof value === 'object' &&
    typeof value.name === 'string' &&
    typeof value.lastModified === 'number' &&
    isBlobLike(value);
const isResponseLike = (value) => value != null &&
    typeof value === 'object' &&
    typeof value.url === 'string' &&
    typeof value.blob === 'function';
/**
 * Helper for creating a {@link File} to pass to an SDK upload method from a variety of different data formats
 * @param value the raw content of the file.  Can be an {@link Uploadable}, {@link BlobLikePart}, or {@link AsyncIterable} of {@link BlobLikePart}s
 * @param {string=} name the name of the file. If omitted, toFile will try to determine a file name from bits if possible
 * @param {Object=} options additional properties
 * @param {string=} options.type the MIME type of the content
 * @param {number=} options.lastModified the last modified timestamp
 * @returns a {@link File} with the given properties
 */
export async function toFile(value, name, options) {
    checkFileSupport();
    // If it's a promise, resolve it.
    value = await value;
    name || (name = getName(value));
    // If we've been given a `File` we don't need to do anything if the name / options
    // have not been customised.
    if (isFileLike(value)) {
        if (value instanceof File && name == null && options == null) {
            return value;
        }
        return makeFile([await value.arrayBuffer()], name ?? value.name, {
            type: value.type,
            lastModified: value.lastModified,
            ...options,
        });
    }
    if (isResponseLike(value)) {
        const blob = await value.blob();
        name || (name = new URL(value.url).pathname.split(/[\\/]/).pop());
        return makeFile(await getBytes(blob), name, options);
    }
    const parts = await getBytes(value);
    if (!options?.type) {
        const type = parts.find((part) => typeof part === 'object' && 'type' in part && part.type);
        if (typeof type === 'string') {
            options = { ...options, type };
        }
    }
    return makeFile(parts, name, options);
}
async function getBytes(value) {
    let parts = [];
    if (typeof value === 'string' ||
        ArrayBuffer.isView(value) || // includes Uint8Array, Buffer, etc.
        value instanceof ArrayBuffer) {
        parts.push(value);
    }
    else if (isBlobLike(value)) {
        parts.push(value instanceof Blob ? value : await value.arrayBuffer());
    }
    else if (isAsyncIterable(value) // includes Readable, ReadableStream, etc.
    ) {
        for await (const chunk of value) {
            parts.push(...(await getBytes(chunk))); // TODO, consider validating?
        }
    }
    else {
        const constructor = value?.constructor?.name;
        throw new Error(`Unexpected data type: ${typeof value}${constructor ? `; constructor: ${constructor}` : ''}${propsForError(value)}`);
    }
    return parts;
}
function propsForError(value) {
    if (typeof value !== 'object' || value === null)
        return '';
    const props = Object.getOwnPropertyNames(value);
    return `; props: [${props.map((p) => `"${p}"`).join(', ')}]`;
}
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